There are four main hormones that work in a complex and intricate way during the menstrual cycle and play a key role in fertility.
Female Reproductive Endocrinology - Gynecology and Obstetrics - Merck Manuals Professional Edition
What Are The Female Fertility Hormones And What Role Do They Play?
Male & Female Sex Hormones - Definition & Functions
Age and female fertility - Wikipedia
Female infertility - Wikipedia
24.4. Hormonal Control of Human Reproduction – Concepts of Biology – 1st Canadian Edition
What Are The Female Fertility Hormones And What Role Do They Play?
Female Fertility Assessment
Female Reproductive System - Control & Action Of Hormones
Hormone Cycle - Infertility Evaluation in Women
How Your Monthly Cycles Relates to Your Fertility - Fertility Answers