APA
Nicholson J. Eastman, . (1959). Obstetrical and Gynecological Survey. U.S.A: The Williams & Wilkins Company.
Chicago
Nicholson J. Eastman, . 1959. Obstetrical and Gynecological Survey. U.S.A: The Williams & Wilkins Company.
Harvard
Nicholson J. Eastman, . (1959). Obstetrical and Gynecological Survey. U.S.A: The Williams & Wilkins Company.
MLA
Nicholson J. Eastman, . Obstetrical and Gynecological Survey. U.S.A: The Williams & Wilkins Company. 1959.