Crowther, S. A. (1970). Journal of an expedition up the Niger and Tshadda rivers: Undertaken by Macgregor Laird in connection with the British government in 1854 (2. ed.). Cass.
Chicago-Zitierstil (17. Ausg.)Crowther, Samuel Ajayi. Journal of an Expedition Up the Niger and Tshadda Rivers: Undertaken by Macgregor Laird in Connection with the British Government in 1854. 2. ed. London: Cass, 1970.
MLA-Zitierstil (9. Ausg.)Crowther, Samuel Ajayi. Journal of an Expedition Up the Niger and Tshadda Rivers: Undertaken by Macgregor Laird in Connection with the British Government in 1854. 2. ed. Cass, 1970.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.