APA (7e ed.) Bronvermelding

Szulc, S. (1965). Statistical methods. Pergamon Press.

Chicago (17e ed.) Bronvermelding

Szulc, Stefan. Statistical Methods. Oxford: Pergamon Press, 1965.

MLA (9e ed.) Bronvermelding

Szulc, Stefan. Statistical Methods. Pergamon Press, 1965.