Cita APA (7th ed.)

Hartman, C. G. (1962). Science and the safe period: A compendium of human reproduction. Williams & Wilkins.

Cita Chicago (17th ed.)

Hartman, Carl Gottfried. Science and the Safe Period: A Compendium of Human Reproduction. Baltimore: Williams & Wilkins, 1962.

Cita MLA (8th ed.)

Hartman, Carl Gottfried. Science and the Safe Period: A Compendium of Human Reproduction. Williams & Wilkins, 1962.