APA Citatie

Không rõ. (2001). Product Planning and Development. Youth PublishingHouse.

Chicago Style citaat

Không rõ. Product Planning and Development. Youth PublishingHouse, 2001.

MLA citatie

Không rõ. Product Planning and Development. Youth PublishingHouse, 2001.

Let op: Deze citaties zijn niet altijd 100% accuraat.