Cita APA (7a ed.)

Bernstein, R., & Bernstein, S. (1996). Biology. WmC. Brown.

Cita Chicago Style (17a ed.)

Bernstein, Ruth, y Stephen Bernstein. Biology. Dubuque, IA: WmC. Brown, 1996.

Cita MLA (9a ed.)

Bernstein, Ruth, y Stephen Bernstein. Biology. WmC. Brown, 1996.