The phrase "a strong reference" is correct and usable in written English.
It can be used in contexts where you are discussing a recommendation or endorsement that is particularly positive or compelling.
Example: "I can provide a strong reference for her, as I have worked closely with her on several projects."
Alternatives: "a solid recommendation" or "a robust endorsement".
But he had an unusual degree of confidence, and, after securing a strong reference from an English grammar school that he'd attended for a year, he persuaded an Oxford admissions officer to let him in.
The architect says the project "has a strong reference to Russian constructivism, [which] gives the tower a strong vertical thrust similar to the one found in New York's Chrysler building".
Reference letters may also include complementary material to your application (e.g. lack of life science coursework on the transcript can be complemented by a strong reference letter describing your research experience in a life sciences lab).
In December 1989, William Ramirez, then Chief of the Main Library, wrote a memo objecting to the foreseen change "from a strong reference, research resource and service center to an undistinguished 'popular library.'" Many of Dowlin's employees have resisted the change, protecting books by hiding or falsely stamping them.
You always want a strong reference from past colleagues.
No VC will give you too much importance if you don't come with a strong reference.
Several donors of the gender theme group have been encouraging a stronger reference to gender within this process coupled with a commitment to subsequent funding.
A forced Explanation relation causes a very strong reference to the subject, even in realized TOP sentences which might otherwise favor reference to the Goal.
With around 40% of the population without access to electricity but also a high penetration of solar home systems in its off grid areas, the case of Bangladesh is a very strong reference for the applicability of the Sustainable Energy Access for All (SE4A) goals.
"A lot strong references to some graphics of our fav 70 and 80s films like Colossus, War Games, Escape from New York, and many more.
"I felt that these two ladies would provide such a strong time reference that I could take a little bit more freedom," Mr. Kaminski said.
