APA (7 ম সংস্করণ) উদ্ধৃতি

GRAY, A. S. The development of economic doctrine#An introductory survey#Alexander Gray. Longanns Northumberland Press.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

GRAY, Alexander Sir. The Development of Economic Doctrine#An Introductory Survey#Alexander Gray. Longanns Northumberland Press.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

GRAY, Alexander Sir. The Development of Economic Doctrine#An Introductory Survey#Alexander Gray. Longanns Northumberland Press.