Gay, L. (1987). Educational research: Competencies for analysis and application (3rd.ed.). Merrill.
Chicago-viite (17. p.)Gay, L.R. Educational Research: Competencies for Analysis and Application. 3rd.ed. Columbus: Merrill, 1987.
MLA-viite (9. p.)Gay, L.R. Educational Research: Competencies for Analysis and Application. 3rd.ed. Merrill, 1987.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.