Citazione Stile APA (7a Edizione)

Martin, C., & Walton, B. (1989). People and the natural environment (1. publ.). Hodder and Stoughton.

Citazione stile Chigago Style (17a edizione)

Martin, Chris, e Bob Walton. People and the Natural Environment. 1. publ. London [u.a.]: Hodder and Stoughton, 1989.

Citatione MLA (9a ed.)

Martin, Chris, e Bob Walton. People and the Natural Environment. 1. publ. Hodder and Stoughton, 1989.