Não informado. (1976). Comments on astrophysics. Gordon and Breach.
Style de citation Chicago (17e éd.)Não informado. Comments on Astrophysics. New York: Gordon and Breach, 1976.
Style de citation MLA (8e éd.)Não informado. Comments on Astrophysics. Gordon and Breach, 1976.
Attention : ces citations peuvent ne pas être correctes à 100%.