APA

HILGERS T. W., . (1995). THE SCIENTIFIC FOUNDATIONS OF THE OVULATION METHOD. [s.l.]: POPE PAUL VI INSTITUTE PRESS.

Chicago

HILGERS THOMAS W, . 1995. THE SCIENTIFIC FOUNDATIONS OF THE OVULATION METHOD. [s.l.]: POPE PAUL VI INSTITUTE PRESS.

Harvard

HILGERS T. W., . (1995). THE SCIENTIFIC FOUNDATIONS OF THE OVULATION METHOD. [s.l.]: POPE PAUL VI INSTITUTE PRESS.

MLA

HILGERS THOMAS W, . THE SCIENTIFIC FOUNDATIONS OF THE OVULATION METHOD. [s.l.]: POPE PAUL VI INSTITUTE PRESS. 1995.