APA (7e ed.) Bronvermelding

Não informado. Western horizons. National Drug and Chemical Corporation of Canada.

Chicago (17e ed.) Bronvermelding

Não informado. Western Horizons. Winnipeg, Canada: National Drug and Chemical Corporation of Canada.

MLA (8e ed.) Bronvermelding

Não informado. Western Horizons. National Drug and Chemical Corporation of Canada.

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