Bent, R. K., & Kronenberg, H. (1961). Principles and practices of secondary education (4th ed.). McGraw-Hill.
Chicago-viite (17. p.)Bent, Rudyard Kipling, ja Henry Kronenberg. Principles and Practices of Secondary Education. 4th ed. New York: McGraw-Hill, 1961.
MLA-viite (9. p.)Bent, Rudyard Kipling, ja Henry Kronenberg. Principles and Practices of Secondary Education. 4th ed. McGraw-Hill, 1961.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.