April, E. W. (1990). Anatomy (2nd ed.). Williams & Wilkins.
Chicago Style aipamenaApril, Ernest W. Anatomy. 2nd ed. Baltimore: Williams & Wilkins, 1990.
MLA aipamenaApril, Ernest W. Anatomy. 2nd ed. Williams & Wilkins, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.