Cita APA (7a ed.)

Brachet-Cota, A., & Burton, G. An Improved Preparation of ll, 19-Oxidopregn-4-ene-3, 20-dione and 6, 19-Oxidopregn-4-ene-3, 11, 20-trione.

Cita Chicago Style (17a ed.)

Brachet-Cota, A.L, y G. Burton. An Improved Preparation of Ll, 19-Oxidopregn-4-ene-3, 20-dione and 6, 19-Oxidopregn-4-ene-3, 11, 20-trione.

Cita MLA (8a ed.)

Brachet-Cota, A.L, y G. Burton. An Improved Preparation of Ll, 19-Oxidopregn-4-ene-3, 20-dione and 6, 19-Oxidopregn-4-ene-3, 11, 20-trione.