Citazione Stile APA (7a Edizione)

Crowther, S. (1970). Journal of an expedition up the Niger and Tshadda rivers: Undertaken by Maegregor Laird in connection with the British Government in 1854 (2nd.). Cass.

Citazione stile Chigago Style (17a edizione)

Crowther, Samuel. Journal of an Expedition Up the Niger and Tshadda Rivers: Undertaken by Maegregor Laird in Connection with the British Government in 1854. 2nd. London: Cass, 1970.

Citatione MLA (8a ed.)

Crowther, Samuel. Journal of an Expedition Up the Niger and Tshadda Rivers: Undertaken by Maegregor Laird in Connection with the British Government in 1854. 2nd. Cass, 1970.