APA
(1999). WHO Laboratory Manual for the Examination of Human Semen and Sperm - Cervical Mucus Interaction. Cambridge: Cambridge University Press.
Chicago
1999. WHO Laboratory Manual for the Examination of Human Semen and Sperm - Cervical Mucus Interaction. Cambridge: Cambridge University Press.
Harvard
(1999). WHO Laboratory Manual for the Examination of Human Semen and Sperm - Cervical Mucus Interaction. Cambridge: Cambridge University Press.
MLA
WHO Laboratory Manual for the Examination of Human Semen and Sperm - Cervical Mucus Interaction. Cambridge: Cambridge University Press. 1999.