APA (7th ed.) Citation

Gray, C. F. (1981). Essentials of project management. Petrocelli Books.

Chicago Style (17th ed.) Citation

Gray, Clifford F. Essentials of Project Management. Princeton, NJ: Petrocelli Books, 1981.

MLA (9th ed.) Citation

Gray, Clifford F. Essentials of Project Management. Petrocelli Books, 1981.

Warning: These citations may not always be 100% accurate.