APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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