The phrase "required to refer to" is grammatically correct and can be used in written English.
It is typically used when discussing the language or structure of a sentence. For example, you might say, "In order for this sentence to be grammatically correct, it is required to refer to the subject before the verb." This means that the subject of the sentence must come before the verb in order for the sentence to be considered grammatically correct. Another example could be, "When writing a research paper, it is often required to refer to outside sources to support your arguments." This means that it is necessary to cite sources in order to support your claims in a research paper.
In the House of Commons, MPs are required to refer to each other as "honourable".
On instructions from the court, he is required to refer to himself in the third person as he questions witnesses.
Also, because the pork lobby has loudly objected to the term "swine flu," all federal health officials are required to refer to it as pandemic H1N1 or 2009 H1N1.
Donald Sutherland, who narrates the four hours, deliberately plays that down, determined to be matter-of-fact, but even he can't help himself when required to refer to the empire and "the dark forces that threatened to tear it apart" or to say of Rhodes, "His lust for power would soon plunge Victoria's empire into its darkest hour".
Childcare centres are required to refer to the MOE's Curriculum Framework and the Kindergarten Curriculum Guide for its kindergarten programme.
Instead of describing students' ability level in qualitative terms, teachers were required to refer to these statements and then use a rating scale, ranging from 1 to 10, to set down their judgment of the achievement of each of their students per statement.
Outcomes, including surrogate outcomes, listed in the scope included wound healing, quality of life, time to complete debridement, number of debridements required, number of dressings required, types of dressings required and the need to refer to a tissue viability nurse or hospital specialist clinic.
Doctors who object to the practice are not even required to refer patients who request the medication to another physician.
If prospective buyers seek to hire a solicitor for the purchase of a house that the solicitor is coincidentally selling, the solicitor is required to refer them to another solicitor, Mr. Harrison said.
Medical practitioners in the majority-Catholic nation will be able to conscientiously object to performing terminations, but will be required to refer women to colleagues to perform the procedure.
"At the same time, they are also required to refer the prescription to another pharmacist or manager on duty to meet the patient's needs in a timely manner".
