APA

Godfrey R. W., Lunstra D. D., Jenkins T. G., Berardinelli J. G., Guthrie M. J., Neuendorff D. A., Long C. R. & Randel R. D. (19900501). Effect of season and location on semen quality and serum concentrations of luteinizing hormone and testosterone in Brahman and Hereford bulls. : Journal of animal science.

Chicago

Godfrey R W, Lunstra D D, Jenkins T G, Berardinelli J G, Guthrie M J, Neuendorff D A, Long C R and Randel R D. 19900501. Effect of season and location on semen quality and serum concentrations of luteinizing hormone and testosterone in Brahman and Hereford bulls. : Journal of animal science.

Harvard

Godfrey R. W., Lunstra D. D., Jenkins T. G., Berardinelli J. G., Guthrie M. J., Neuendorff D. A., Long C. R. and Randel R. D. (19900501). Effect of season and location on semen quality and serum concentrations of luteinizing hormone and testosterone in Brahman and Hereford bulls. : Journal of animal science.

MLA

Godfrey R W, Lunstra D D, Jenkins T G, Berardinelli J G, Guthrie M J, Neuendorff D A, Long C R and Randel R D. Effect of season and location on semen quality and serum concentrations of luteinizing hormone and testosterone in Brahman and Hereford bulls. : Journal of animal science. 19900501.