Method description

Sympto-Thermal Method by Kippley's (STMK)

• The Couple to Couple League International

Ovulation Method (OM) by Billings

• World Organisation Ovulation Method Billings
• Family of the Americas

Organisations

• Human Life International
• Northwest Family Services (STM-R)
• The Couple to Couple League International (STM-K) - Espanol - Polski
• One More Soul (STM-K)
• Family of the Americas (OM)
• Billings Family Life Centre
• World Organisation Ovulation Method Billings - Espanol - Francais
• Pope Paul VI Institute (OM - Creighton Model)
• The GIFT Foundation (contra-contraception)

Journals

• CCL Family Foundations

Discussion Boards

• NFP Back Porch Chit Chat

Statistics

• OM - collected by "Family of the Americas"

Catolic Church documents

• Humanae vitae - Pope Paul VI:

• Encyklika Evangelium Vitae - Jan Paweł II

MW 2000 - 2003