Operatie babysit

MLA

Ley, Carl. Operatie Babysit. Averbode: Altiora, 1984.

APA

Ley, C. (1984). Operatie babysit. Averbode: Altiora.

Chicago

Ley, Carl Operatie Babysit. Averbode: Altiora, 1984.