APA (7 ম সংস্করণ) উদ্ধৃতি

Penrose, E. (1968). A Note on Development Planning and The Role of The Enterprise. The Institute of National Planning.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Penrose, E. A Note on Development Planning and The Role of The Enterprise. Cairo: The Institute of National Planning, 1968.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Penrose, E. A Note on Development Planning and The Role of The Enterprise. The Institute of National Planning, 1968.