Citazione Stile APA (7a Edizione)

National Education Association of the United States. Dept. of Classroom Teachers & National Education Association of the United States. Research Division. (1940). Discussion pamphlet. no. 1-. s.n.

Citazione stile Chigago Style (17a edizione)

National Education Association of the United States. Dept. of Classroom Teachers e National Education Association of the United States. Research Division. Discussion Pamphlet. No. 1-. Washington: s.n, 1940.

Citatione MLA (9a ed.)

National Education Association of the United States. Dept. of Classroom Teachers e National Education Association of the United States. Research Division. Discussion Pamphlet. No. 1-. s.n, 1940.