APA (7th ed.) Citation

Willis, J. R. (1985). Slaves and slavery in Muslim Africa. Cass.

Chicago Style (17th ed.) Citation

Willis, John Ralph. Slaves and Slavery in Muslim Africa. London [u.a.]: Cass, 1985.

MLA (8th ed.) Citation

Willis, John Ralph. Slaves and Slavery in Muslim Africa. Cass, 1985.