APA (7th ed.) Citation

Thom, D. J. (1970). Niger's landlocked position: The problem of groundnut evacuation. [publisher not identified].

Chicago Style (17th ed.) Citation

Thom, Derrick J. Niger's Landlocked Position: The Problem of Groundnut Evacuation. [Place of publication not identified]: [publisher not identified], 1970.

MLA (9th ed.) Citation

Thom, Derrick J. Niger's Landlocked Position: The Problem of Groundnut Evacuation. [publisher not identified], 1970.