Cita APA (7a ed.)

Raven, P. H., Berg, L. R., & Johnson, G. B. (1993). Environment. Saunders College Pub.

Cita Chicago Style (17a ed.)

Raven, Peter H., Linda R. Berg, y George Brooks Johnson. Environment. Fort Worth, TX: Saunders College Pub, 1993.

Cita MLA (9a ed.)

Raven, Peter H., et al. Environment. Saunders College Pub, 1993.