Wuyung, Puspita Eka; Soeradi, Oentoeng; Pringgoutomo, Sudarto (1992). "Inhibition of spermatogenesis by progesterone and androgen combinations in C3H mice". Medical Journal of the University of Indonesia, Vol.1, No.2, April - June 1992: hal. 74-76
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Warning: These citations may not always be 100% accurate.