Gaya APA

Müller, W, E. (2005). St. John's Wort and its Active Principles in Depression and Anxiety (1st ed.). Basel: Birkhauser.

Gaya MLA

Müller, Walter, E.. "St. John's Wort and its Active Principles in Depression and Anxiety". 1st ed. Basel: Birkhauser, 2005. E Book.