Cita APA (7th ed.)

Gerkan, M. v. (2001). gmp. Birkhäuser.

Cita Chicago (17th ed.)

Gerkan, Meinhard von. Gmp. Basel [u.a.]: Birkhäuser, 2001.

Cita MLA (8th ed.)

Gerkan, Meinhard von. Gmp. Birkhäuser, 2001.