Cita APA (7a ed.)

Marsden, B., Marsden, V., & Catling, S. (1995). Looking after nature (1. publ.). Longman.

Cita Chicago Style (17a ed.)

Marsden, Bill, Vera Marsden, y Simon Catling. Looking After Nature. 1. publ. Harlow: Longman, 1995.

Cita MLA (9a ed.)

Marsden, Bill, et al. Looking After Nature. 1. publ. Longman, 1995.