Taking Charge of Your Fertility by Toni Weschler on Amazon.com
The TCOYF web site
A link to the printable TCOYF charts
The Garden of Fertility by Katie Singer on Amazon.com
A link to the Garden of Fertility printable charts
NOTE: I’m not in cahoots with nor receiving benefits from any of these authors, companies or web sites. I’m just recommending what worked for me.