Cita APA (7a ed.)

Butt, A. A. (1966). Late oligocene foraminifera from Escornebeou, SW France. Schotanus & Jens.

Cita Chicago Style (17a ed.)

Butt, Aftab Ahmad. Late Oligocene Foraminifera from Escornebeou, SW France. Utrecht: Schotanus & Jens, 1966.

Cita MLA (8a ed.)

Butt, Aftab Ahmad. Late Oligocene Foraminifera from Escornebeou, SW France. Schotanus & Jens, 1966.