Cita APA

Helmkamp, G. K., & Johnson, H. W. 1. (1964). Selected experiments in organic chemistry. San Francisco: W.H. Freeman.

Citación estilo Chicago

Helmkamp, George K., y Harry William 1927- Johnson. Selected Experiments in Organic Chemistry. San Francisco: W.H. Freeman, 1964.

Cita MLA

Helmkamp, George K., y Harry William 1927- Johnson. Selected Experiments in Organic Chemistry. San Francisco: W.H. Freeman, 1964.