Cita APA (7th ed.)
Ely, D. P. (1993). Investigación: Educational Resources Information Center (ERIC).
Cita Chicago (17th ed.)
Ely, Donald P. Investigación: Educational Resources Information Center (ERIC). 1993.
Cita MLA (9th ed.)
Ely, Donald P. Investigación: Educational Resources Information Center (ERIC). 1993.
Atenció: Aquestes cites poden no estar 100% correctes.