Cita APA (7a ed.)

Green, M., Allison, K., & Murray, P. (1993). Physical geography (1. publ.). Folens.

Cita Chicago Style (17a ed.)

Green, Mary, Keith Allison, y Pat Murray. Physical Geography. 1. publ. Dunstable: Folens, 1993.

Cita MLA (9a ed.)

Green, Mary, et al. Physical Geography. 1. publ. Folens, 1993.