Two highly rated books about female anatomy on Goodreads are "It's Perfectly Normal: Changing Bodies, Growing Up, Sex and Sexual Health" and "Women's Anatomy Of Arousal: Secret Maps To Buried Pleasure," as of 2015. The former is for ages 10 and up, while the latter is for an adult audience.
"It's Perfectly Normal: Changing Bodies, Growing Up, Sex and Sexual Health" by Robie H. Harris and Michael Emberley provides its young audience with answers to questions about sexual anatomy and sex. Topics covered include puberty, STDs and birth control.
"Women's Anatomy Of Arousal: Secret Maps To Buried Pleasure" by sexuality instructor Sheri Winston discusses female anatomy in the context of maximizing sexual satisfaction. The American Association of Sexuality Educators, Counselors and Therapists named it the book of the year in 2010.