Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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