.Brown, S. L., & Errera, S. (1987). Trading energy futures: A manual for energy industry professionals. Quorum Books.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি.Brown, Stewart L., এবং Steven Errera. Trading Energy Futures: A Manual for Energy Industry Professionals. New York: Quorum Books, 1987.
M.L.A (9 ম সংস্করণ) উদ্ধৃতি.Brown, Stewart L., এবং Steven Errera. Trading Energy Futures: A Manual for Energy Industry Professionals. Quorum Books, 1987.