APA Edition Citation

Helmkamp, G. K., & Johnson, H. W. (1983). Selected experiments in organic chemistry / by G.K. Helmkamp and H.W. Johnson (3rd ed.). Freeman.

Chicago Edition Citation

Helmkamp, G. K., and H. W. Johnson. Selected Experiments in Organic Chemistry / by G.K. Helmkamp and H.W. Johnson. 3rd ed. Freeman, 1983.

MLA Edition Citation

Helmkamp, G. K., and H. W. Johnson. Selected Experiments in Organic Chemistry / by G.K. Helmkamp and H.W. Johnson. 3rd ed. Freeman, 1983.

Warning: These citations may not always be 100% accurate.