Cita APA (7th ed.)

Gray, D. A. (1990). The entrepreneur's complete self-assessment guide (2nd ed.). International Self-Counsel Press.

Cita Chicago (17th ed.)

Gray, Douglas A. The Entrepreneur's Complete Self-assessment Guide. 2nd ed. Vancouver: International Self-Counsel Press, 1990.

Cita MLA (9th ed.)

Gray, Douglas A. The Entrepreneur's Complete Self-assessment Guide. 2nd ed. International Self-Counsel Press, 1990.