Schmidt Nielsen, K. Animal Physiology, Adaptations & Environment, Cambridge Univ. Press (1975).
▪ Tumer CII. General Endocrinology. W.B. Daunders, Tippan Co. Ltd. Tokyo, Japan (1966).
▪ Schmidt Nielsen, K.: Animal Physiology, Adaptations & Environment Cambridge Press (1975).
▪ Tumer CII: General Endocrinology, W.B. Saunders, Tippan Co. Ltd. Tokyo, Japan (1966).
▪ General and Comparative Endocrinology, E.J.W. Barrington. Oxford. Clarendon Press.
▪ Text Book of Endocrinology, R.H. Williams. W.B. Saunders.
▪ Endocrine Physiology. C.R. Martin. Oxford Univ. Press.
▪ Assali,N.S.: Biology of Gestation.VolI and II. Academic press, New York.
▪ Birkhead T.K. and Moller A.P. :Sperm competition and sexual selection. Academic press,London,1998.
▪ Cole, H.h. ,Cupps P.T.: Reproduction in domestic animals.
▪ Dorfman, R.I.: Methods in hormone research (Vol I and Vol II) . Academic press, New York.1962.
▪ Edwards R.G. and Brody S,A.: Principles and practice of assisted human reproduction. W.b. Saunders Co., Philadelphia,1995.