Cita APA (7a ed.)

Moreau, P., Francis, I., & Kennedy, W. (1983). Cenomanian ammonites from northern aquitaine.

Cita Chicago Style (17a ed.)

Moreau, P., I. Francis, y W. Kennedy. Cenomanian Ammonites from Northern Aquitaine. 1983.

Cita MLA (9a ed.)

Moreau, P., et al. Cenomanian Ammonites from Northern Aquitaine. 1983.