APA

Leythaeuser D., Schaefer R., Nuclear Research Centre. Institute of Petroleum and Organic Geochemistry, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston), Schaefer R. & Nuclear Research Centre. Institute of Petroleum and Organic Geochemistry.On the primary migration of petroleum. : .

Chicago

Leythaeuser D, Schaefer R.G, Nuclear Research Centre. Institute of Petroleum and Organic Geochemistry, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston), Schaefer R.G and Nuclear Research Centre. Institute of Petroleum and Organic Geochemistry.On the primary migration of petroleum. : .

Harvard

Leythaeuser D., Schaefer R., Nuclear Research Centre. Institute of Petroleum and Organic Geochemistry, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston), Schaefer R. and Nuclear Research Centre. Institute of Petroleum and Organic Geochemistry.On the primary migration of petroleum. : .

MLA

Leythaeuser D, Schaefer R.G, Nuclear Research Centre. Institute of Petroleum and Organic Geochemistry, World Petroleum Congress (12th : 1987 26 abr/1 may : Houston), Schaefer R.G and Nuclear Research Centre. Institute of Petroleum and Organic Geochemistry.: . .