Speroff, Leon. Glass, Robert H. Kase, Nathan G. creator text Philadelphia LWW 1999 6th ed. monographic x, 1200 p. : ill. (some col.) ; Endocrine gynecology Infertility Genital Diseases, Female Endocrine Diseases Infertility, Female WP 100 SPE 1999 0683303791 https://books.google.com.pk/books?id=yORsAAAAMAAJ&q=0683303791&dq=0683303791&hl=en&sa=X&redir_esc=y https://books.google.com.pk/books?id=yORsAAAAMAAJ&q=0683303791&dq=0683303791&hl=en&sa=X&redir_esc=y 20260128043044.0