Dyfyniad APA

Carnegie, D. (1940). How to win friend and influences people (6ª ed.). Pocket Books.

Dyfyniad Arddull Chicago

Carnegie, Dale. How to Win Friend and Influences People. 6ª ed. Pocket Books, 1940.

Dyfyniad MLA

Carnegie, Dale. How to Win Friend and Influences People. 6ª ed. Pocket Books, 1940.

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