Cita APA (7th ed.)
Phent,Wolfgang. (1999). Gottfried Bohm. Birkhauser.
Cita Chicago (17th ed.)
Phent,Wolfgang. Gottfried Bohm. German: Birkhauser, 1999.
Cita MLA (9th ed.)
Phent,Wolfgang. Gottfried Bohm. Birkhauser, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.