Cita APA (7a ed.)
Bullough, R. V. (1988). Creating instructional materials (3rd ed.). Merrill.
Cita Chicago Style (17a ed.)
Bullough, Robert V. Creating Instructional Materials. 3rd ed. Columbus: Merrill, 1988.
Cita MLA (9a ed.)
Bullough, Robert V. Creating Instructional Materials. 3rd ed. Merrill, 1988.
Precaución: Estas citas no son 100% exactas.