Cita APA (7a ed.)

Pimentel, G. C. (1967). Chemistry: An experimental science ([6th printing].). Freeman.

Cita Chicago Style (17a ed.)

Pimentel, George C. Chemistry: An Experimental Science. [6th printing]. San Francisco [etc.]: Freeman, 1967.

Cita MLA (9a ed.)

Pimentel, George C. Chemistry: An Experimental Science. [6th printing]. Freeman, 1967.