Cita APA

Bernstein, R., & Bernstein, S. (1996). Biology. Dubuque, Iowa: Wm. C. Brown.

Chicago Style Citation

Bernstein, Ruth, i Stephen Bernstein. Biology. Dubuque, Iowa: Wm. C. Brown, 1996.

Cita MLA

Bernstein, Ruth, i Stephen Bernstein. Biology. Dubuque, Iowa: Wm. C. Brown, 1996.

Atenció: Aquestes cites poden no estar 100% correctes.