"strictures of" is correct and usable in written English.
You can use it to refer to a set of strict rules or regulations, such as "The strictures of the dress code must be followed at all times."
But nor did he follow the strictures of pure flamenco.
Minorities aren't exempt from the strictures of collective responsibility.
"Men suffer more" from the strictures of gender, Fonda told the New York Times.
Moreover, they were never bound by the strictures of stadium pop.
The strictures of this style of thought are indeed very old.
Art, luckily, mattered more than the piddling strictures of the law, and Muybridge was acquitted.
But their expertise is often muted by the strictures of a prime-time broadcast.
None of them took the strictures of faith very seriously or knew many of its teachings.
According to the strictures of moral philosophy, that means it was not a just war.
Many, it seems, were seeking relief from the strictures of family life in Britain.
The much-reviled strictures of conservative Islam sound almost paradisiacal by comparison.
