APA (7e ed.) Bronvermelding

Não informado. Ulrich's Quarterly. R.R. Bowker Company.

Chicago (17e ed.) Bronvermelding

Não informado. Ulrich's Quarterly. New York: R.R. Bowker Company.

MLA (8e ed.) Bronvermelding

Não informado. Ulrich's Quarterly. R.R. Bowker Company.

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