APA (7th ed.) Citation

Ladd, P. D., & Ruby, J. (1998). Observation: Key to Successful Classroom Management. Business Education Forum, 53(1), 40.

Chicago Style (17th ed.) Citation

Ladd, Paula D., and Jr Ruby. "Observation: Key to Successful Classroom Management." Business Education Forum 53, no. 1 (1998): 40.

MLA (9th ed.) Citation

Ladd, Paula D., and Jr Ruby. "Observation: Key to Successful Classroom Management." Business Education Forum, vol. 53, no. 1, 1998, p. 40.