APA (7th ed.) Citation

Lander, R., Lander, J., & Hallett, R. (2004). The Niger journal of Richard and John Lander. Routledge.

Chicago Style (17th ed.) Citation

Lander, Richard, John Lander, and Robin Hallett. The Niger Journal of Richard and John Lander. London [etc.]: Routledge, 2004.

MLA (9th ed.) Citation

Lander, Richard, et al. The Niger Journal of Richard and John Lander. Routledge, 2004.