Dyfyniad APA

Biehn, J. (1997). Ominous practice pattern. College of Family Physicians of Canada.

Dyfyniad Arddull Chicago

Biehn, J. Ominous Practice Pattern. College of Family Physicians of Canada, 1997.

Dyfyniad MLA

Biehn, J. Ominous Practice Pattern. College of Family Physicians of Canada, 1997.

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