Cita APA (7a ed.)

Charles, C. (1995). Introduction to educational research (2nd ed.). Longman.

Cita Chicago Style (17a ed.)

Charles, C.M. Introduction to Educational Research. 2nd ed. White Plains, N.Y.: Longman, 1995.

Cita MLA (9a ed.)

Charles, C.M. Introduction to Educational Research. 2nd ed. Longman, 1995.