Citazione Stile APA (7a Edizione)

GUTH, H. P. (1969). Words and ideas.-- ed.3. Waadsworth Publishing.

Citazione stile Chigago Style (17a edizione)

GUTH, Hans P. Words and Ideas.-- Ed.3. Belmont: Waadsworth Publishing, 1969.

Citatione MLA (9a ed.)

GUTH, Hans P. Words and Ideas.-- Ed.3. Waadsworth Publishing, 1969.