APA (7 ম সংস্করণ) উদ্ধৃতি

Gilbreth, R. D. (1987). Forward thinking: The pragmatist's guide to Today's Business Trends. McGraw-Hill.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Gilbreth, Robert D. Forward Thinking: The Pragmatist's Guide to Today's Business Trends. New York: McGraw-Hill, 1987.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Gilbreth, Robert D. Forward Thinking: The Pragmatist's Guide to Today's Business Trends. McGraw-Hill, 1987.