Παραπομπή APA

Herbert, C. P. (2001). The fifth principle. Family physicians as advocates.

Παραπομπή Chicago Style

Herbert, C. P. The Fifth Principle. Family Physicians As Advocates. 2001.

Παραπομπή MLA

Herbert, C. P. The Fifth Principle. Family Physicians As Advocates. 2001.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.