Läckgren, G. (1983). The human undescended testis and the effect of HCG treatment: A study of the morphology, in vitro progesterone metabolism, gonadotrophin receptors amd germ cell adenylyl cyclase in testicular biopsies. Distributor, Almqvist & Wiksell International.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Läckgren, Göran. The Human Undescended Testis and the Effect of HCG Treatment: A Study of the Morphology, in Vitro Progesterone Metabolism, Gonadotrophin Receptors Amd Germ Cell Adenylyl Cyclase in Testicular Biopsies. Stockholm: Distributor, Almqvist & Wiksell International, 1983.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Läckgren, Göran. The Human Undescended Testis and the Effect of HCG Treatment: A Study of the Morphology, in Vitro Progesterone Metabolism, Gonadotrophin Receptors Amd Germ Cell Adenylyl Cyclase in Testicular Biopsies. Distributor, Almqvist & Wiksell International, 1983.