Cita APA (7th ed.)
Kremer, J. (1968). The in vitro Spermatozoal Penetration Test in fertility investigations.
Cita Chicago (17th ed.)
Kremer, Jan. The in Vitro Spermatozoal Penetration Test in Fertility Investigations. Groningen, 1968.
Cita MLA (9th ed.)
Kremer, Jan. The in Vitro Spermatozoal Penetration Test in Fertility Investigations. 1968.
Atenció: Aquestes cites poden no estar 100% correctes.