Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (8a ed.)

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