Cita APA (7a ed.)

(1982). The best of natural family planning: Selections 1977-1980. Human Life International.

Cita Chicago Style (17a ed.)

The Best of Natural Family Planning: Selections 1977-1980. Washington: Human Life International, 1982.

Cita MLA (9a ed.)

The Best of Natural Family Planning: Selections 1977-1980. Human Life International, 1982.