Literature in Polish:

 „Lepsze zdrowie dla każdej kobiety” Tomasz Nocuń, lekarz medycyny

Literature in English:

 „Natural Progesterone The Natural Way to Alleviate Symptoms of Menopause, PMS, Endometriosis and Other Hormone-related Problems” Ann Rushton, Shirley Bond, John Lee

„Progesterone the Ultimate Women’s Feel Good Hormone” Dan Purser MD

„Natural Progesterone: The Multiple Roles of A Remarkable Hormone” John R. Lee

„What Your Doctor May Not Tell You About Menopause. The Breakthrough Book on Natural Progesterone” John R. Lee, Virginia Hopkins

Literature in French:

„Equilibre hormonal et progestérone naturelle” John-R Lee

 „Hormones naturelles” Najet Amor

Literature in German:

„Natürliches Progesteron. Der alternative Weg bei PMS und Hormonproblemen” Anna Rushton, Shirley A. Bond

„Natürliches Progesteron. Ein bemerkenswertes Hormon” John R. Lee