...
Section 6.5 of the C standard [ISO/IEC 9899:2011] defines the precedence of operation by the order of the subclauses.
...
CERT C++ Secure Coding Standard: EXP00-CPP. Use parentheses for precedence of operation
ISO/IEC 9899:2011 Section Section 6.5, "Expressions"
ISO/IEC TR 24772 "JCW Operator precedence/order of evaluation"
...
[Dowd 2006] Chapter 6, "C Language Issues" (Precedence, pp. 287—288)
[Kernighan 1988]
[NASA-GB-1740.13] Section 6.4.3, "C Languagelanguage"
...