Gaya APA

Schaefer, C. et al (2007). DRUGS DURING PREGNANCY AND LACTATION ; Treatment Options and Risk Assessment (second edition). Great Britain: Elsevier.

Gaya MLA

Schaefer, Christof. et al. "DRUGS DURING PREGNANCY AND LACTATION ; Treatment Options and Risk Assessment". second edition Great Britain: Elsevier, 2007. Text.