APA (7e ed.) Bronvermelding

Downie, N. M., & Heath, R. W. (1983). Basic statistical methods. Harper & Row.

Chicago (17e ed.) Bronvermelding

Downie, N. M., en R. W. Heath. Basic Statistical Methods. New York: Harper & Row, 1983.

MLA (9e ed.) Bronvermelding

Downie, N. M., en R. W. Heath. Basic Statistical Methods. Harper & Row, 1983.