MOWRER, DONALD and MARY ELIZABETH D’ZAMKO. "A comparison of humor and directive language in Head Start classrooms" Humor - International Journal of Humor Research, 3.3 (2009): 297-304. Retrieved 19 Jun. 2013, from doi:10.1515/humr.1990.3.3.297

MOWRER, D. & D’ZAMKO, M. (2009). A comparison of humor and directive language in Head Start classrooms. Humor - International Journal of Humor Research, 3(3), pp. 247-355. Retrieved 19 Jun. 2013, from doi:10.1515/humr.1990.3.3.297

MOWRER, DONALD and MARY ELIZABETH D’ZAMKO. 2009. A comparison of humor and directive language in Head Start classrooms. Humor - International Journal of Humor Research. 3(3): 247-355. Retrieved 19 Jun. 2013, from doi:10.1515/humr.1990.3.3.297