APA (7th ed.) Citation

Epstein, D. (2018). Project Estimating Process. PM World Journal, 7(11), 1.

Chicago Style (17th ed.) Citation

Epstein, Dan. "Project Estimating Process." PM World Journal 7, no. 11 (2018): 1.

MLA (9th ed.) Citation

Epstein, Dan. "Project Estimating Process." PM World Journal, vol. 7, no. 11, 2018, p. 1.