Cita APA (7a ed.)
O'Brien, J. A., & Durham, J. W. (1989). PC software workbook: A tutorial introduction to: The PC and DOS. PC-Write. PC-Calc plus. PC-File plus (2.ed.). IRWIN.
Cita Chicago Style (17a ed.)
O'Brien, James A., y John W. Durham. PC Software Workbook: A Tutorial Introduction to: The PC and DOS. PC-Write. PC-Calc Plus. PC-File Plus. 2.ed. Homewood: IRWIN, 1989.
Cita MLA (9a ed.)
O'Brien, James A., y John W. Durham. PC Software Workbook: A Tutorial Introduction to: The PC and DOS. PC-Write. PC-Calc Plus. PC-File Plus. 2.ed. IRWIN, 1989.
Precaución: Estas citas no son 100% exactas.