APA (7e ed.) Bronvermelding

Sperling. JoAnn. (1969). Job descriptions in marketing management. AMA, Inc.

Chicago (17e ed.) Bronvermelding

Sperling. JoAnn. Job Descriptions in Marketing Management. New York: AMA, Inc, 1969.

MLA (9e ed.) Bronvermelding

Sperling. JoAnn. Job Descriptions in Marketing Management. AMA, Inc, 1969.

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