APA

Jensen T. K., Carlsen E., Jørgensen N., Berthelsen J. G., Keiding N., Christensen K., Petersen J. H., Knudsen L. B. & Skakkebaek N. E. (20030107). Poor semen quality may contribute to recent decline in fertility rates. : Human reproduction (Oxford, England).

Chicago

Jensen Tina Kold, Carlsen Elisabeth, Jørgensen Niels, Berthelsen Jørgen G, Keiding Niels, Christensen Kaare, Petersen Jørgen Holm, Knudsen Lisbeth B and Skakkebaek Niels E. 20030107. Poor semen quality may contribute to recent decline in fertility rates. : Human reproduction (Oxford, England).

Harvard

Jensen T. K., Carlsen E., Jørgensen N., Berthelsen J. G., Keiding N., Christensen K., Petersen J. H., Knudsen L. B. and Skakkebaek N. E. (20030107). Poor semen quality may contribute to recent decline in fertility rates. : Human reproduction (Oxford, England).

MLA

Jensen Tina Kold, Carlsen Elisabeth, Jørgensen Niels, Berthelsen Jørgen G, Keiding Niels, Christensen Kaare, Petersen Jørgen Holm, Knudsen Lisbeth B and Skakkebaek Niels E. Poor semen quality may contribute to recent decline in fertility rates. : Human reproduction (Oxford, England). 20030107.