Gillespie, C. (1971). Accounting systems: Procedures and methods (3rd ed.). Phoenix Press.
Cita Chicago (17th ed.)Gillespie, Cecil. Accounting Systems: Procedures and Methods. 3rd ed. Quezon City: Phoenix Press, 1971.
Cita MLA (9th ed.)Gillespie, Cecil. Accounting Systems: Procedures and Methods. 3rd ed. Phoenix Press, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.