Dyfyniad APA

Sewell, J. (1966). Marketing and market assessment. Routledge and Kegan Paul.

Dyfyniad Arddull Chicago

Sewell, J.L. Marketing and Market Assessment. London: Routledge and Kegan Paul, 1966.

Dyfyniad MLA

Sewell, J.L. Marketing and Market Assessment. Routledge and Kegan Paul, 1966.

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