Cita APA (7a ed.)

Jack, D. T. (1958). Economic survey of Sierra Leone. Govt. Printing Office.

Cita Chicago Style (17a ed.)

Jack, D. T. Economic Survey of Sierra Leone. [Freetown]: Govt. Printing Office, 1958.

Cita MLA (8a ed.)

Jack, D. T. Economic Survey of Sierra Leone. Govt. Printing Office, 1958.