Welsch, G. A. (1988). Budgeting: Profit planning and control (5th ed.). Prentice-Hall.
Cita Chicago (17th ed.)Welsch, Glenn A. Budgeting: Profit Planning and Control. 5th ed. Englewood Cliffs, N.J: Prentice-Hall, 1988.
Cita MLA (9th ed.)Welsch, Glenn A. Budgeting: Profit Planning and Control. 5th ed. Prentice-Hall, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.