Piepidee = Piep-idee = Pipi-dee = Pipidee.

MLA

Piepidee = Piep-idee = Pipi-dee = Pipidee. Gent: JNM-piepwerking, 1991.

APA

(1991). Piepidee = Piep-idee = Pipi-dee = Pipidee. Gent: JNM-piepwerking.

Chicago

Piepidee = Piep-Idee = Pipi-Dee = Pipidee. Gent: JNM-piepwerking, 1991.