APA aipamena

Chappell, M. N. (1949). Worry and its control. New York, N.Y.: Collier Books.

Chicago Style aipamena

Chappell, Matthew N. Worry and Its Control. New York, N.Y.: Collier Books, 1949.

MLA aipamena

Chappell, Matthew N. Worry and Its Control. New York, N.Y.: Collier Books, 1949.

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