APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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