Citazione Stile APA (7a Edizione)

Covello, L. (1958). The heart is the teacher ([1st ed.].). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Covello, Leonard. The Heart Is the Teacher. [1st ed.]. New York: McGraw-Hill, 1958.

Citatione MLA (9a ed.)

Covello, Leonard. The Heart Is the Teacher. [1st ed.]. McGraw-Hill, 1958.