APA (7th ed.) Citation

Helmkamp, G. K., & Johnson, H. W. (1964). Selected experiments in organic chemistry. Freeman.

Chicago Style (17th ed.) Citation

Helmkamp, George K., and Harry W. Johnson. Selected Experiments in Organic Chemistry. San Fran.: Freeman, 1964.

MLA (8th ed.) Citation

Helmkamp, George K., and Harry W. Johnson. Selected Experiments in Organic Chemistry. Freeman, 1964.