APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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