Cita APA (7a ed.)

Walker, R. G. (1984). Facies models (2nd ed.). Geological Association of Canada Publications, Business and Economic Service.

Cita Chicago Style (17a ed.)

Walker, Roger G. Facies Models. 2nd ed. Toronto, Ont: Geological Association of Canada Publications, Business and Economic Service, 1984.

Cita MLA (9a ed.)

Walker, Roger G. Facies Models. 2nd ed. Geological Association of Canada Publications, Business and Economic Service, 1984.