APA (7th ed.) Zitazioa

Ellsworth, R. E. (1970). The School library: Facilities for independent study in the secondary school. Educational Facilities Laboratories.

Chicago Style (17th ed.) Zitazioa

Ellsworth, Ralph E. The School Library: Facilities for Independent Study in the Secondary School. U.S.A: Educational Facilities Laboratories, 1970.

MLA (9th ed.) Zitazioa

Ellsworth, Ralph E. The School Library: Facilities for Independent Study in the Secondary School. Educational Facilities Laboratories, 1970.