Cita APA (7th ed.)

Tunnadine, D., & Green, R. G. (1978). Unwanted pregnancy--accident or illnessn. Oxford Universtiy Press.

Cita Chicago (17th ed.)

Tunnadine, David, i Roger Graham Green. Unwanted Pregnancy--accident or Illnessn. New York: Oxford Universtiy Press, 1978.

Cita MLA (9th ed.)

Tunnadine, David, i Roger Graham Green. Unwanted Pregnancy--accident or Illnessn. Oxford Universtiy Press, 1978.