Citazione Stile APA (7a Edizione)

Smith, R. L., & Smith, T. M. (2000). Elements of ecology (4th ed. update.). Pearson Education Asia Pte.

Citazione stile Chigago Style (17a edizione)

Smith, Robert Leo, e T. M. Smith. Elements of Ecology. 4th ed. update. Singapore: Pearson Education Asia Pte, 2000.

Citatione MLA (9a ed.)

Smith, Robert Leo, e T. M. Smith. Elements of Ecology. 4th ed. update. Pearson Education Asia Pte, 2000.