Cita APA (7a ed.)

Smith, J. D. (1988). Psychological profiles of conjoined twins: Heredity, environment and identity (1. [print.].). Praeger.

Cita Chicago Style (17a ed.)

Smith, J. David. Psychological Profiles of Conjoined Twins: Heredity, Environment and Identity. 1. [print.]. New York [u.a.]: Praeger, 1988.

Cita MLA (8a ed.)

Smith, J. David. Psychological Profiles of Conjoined Twins: Heredity, Environment and Identity. 1. [print.]. Praeger, 1988.