Cita APA (7a ed.)

Leu, O. Haessler Design Concepts: Not only cuckoo clocks come from the Black Forest.

Cita Chicago Style (17a ed.)

Leu, Olaf. Haessler Design Concepts: Not Only Cuckoo Clocks Come from the Black Forest.

Cita MLA (9a ed.)

Leu, Olaf. Haessler Design Concepts: Not Only Cuckoo Clocks Come from the Black Forest.