Dyfyniad APA

Godin, S. (2019). This is marketing (1st.). Penguin Books.

Dyfyniad Arddull Chicago

Godin, Seth. This Is Marketing. 1st. Penguin Books, 2019.

Dyfyniad MLA

Godin, Seth. This Is Marketing. 1st. Penguin Books, 2019.

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