APA
Keller E., Dahlén H. G., Friedrich E., Bohnet H. G., Richter R., Joel E. W., Schubring G., Klemt W., Wyss H. I., Schindler A. E. & Schneider H. P. (19750829). Human pituitary gonadotropin index. I. Standardized LRH test criteria for evaluation of functional amenorrhea. : The Journal of clinical endocrinology and metabolism.
Chicago
Keller E, Dahlén H G, Friedrich E, Bohnet H G, Richter R, Joel E W, Schubring G, Klemt W, Wyss H I, Schindler A E and Schneider H P. 19750829. Human pituitary gonadotropin index. I. Standardized LRH test criteria for evaluation of functional amenorrhea. : The Journal of clinical endocrinology and metabolism.
Harvard
Keller E., Dahlén H. G., Friedrich E., Bohnet H. G., Richter R., Joel E. W., Schubring G., Klemt W., Wyss H. I., Schindler A. E. and Schneider H. P. (19750829). Human pituitary gonadotropin index. I. Standardized LRH test criteria for evaluation of functional amenorrhea. : The Journal of clinical endocrinology and metabolism.
MLA
Keller E, Dahlén H G, Friedrich E, Bohnet H G, Richter R, Joel E W, Schubring G, Klemt W, Wyss H I, Schindler A E and Schneider H P. Human pituitary gonadotropin index. I. Standardized LRH test criteria for evaluation of functional amenorrhea. : The Journal of clinical endocrinology and metabolism. 19750829.