Gaya APA

Sayre, L, E. (). Sayre's Materia Medica Part V : Apocynacea- Dogbane Family . Philadelphia: Pharmacope.

Gaya MLA

Sayre, Lucius, E.. "Sayre's Materia Medica Part V : Apocynacea- Dogbane Family". Philadelphia: Pharmacope, . Text.