Citazione Stile APA (7a Edizione)

Spears, H. (1957). Curriculum planning through the in-service programs. Prentice-Hall.

Citazione stile Chigago Style (17a edizione)

Spears, Harold. Curriculum Planning Through the In-service Programs. Englewood Cliffs, New Jersey: Prentice-Hall, 1957.

Citatione MLA (9a ed.)

Spears, Harold. Curriculum Planning Through the In-service Programs. Prentice-Hall, 1957.