Cita APA (7a ed.)

Skelton, R. A. (1970). Explorers' maps: Chapters in the cartographic record of geographical discovery. Spring Books.

Cita Chicago Style (17a ed.)

Skelton, R. A. Explorers' Maps: Chapters in the Cartographic Record of Geographical Discovery. London, etc.: Spring Books, 1970.

Cita MLA (9a ed.)

Skelton, R. A. Explorers' Maps: Chapters in the Cartographic Record of Geographical Discovery. Spring Books, 1970.