(2023). Secondary geography (First published 1983, fifth edition 2019.). KLB, Kenya Literature Bureau, Publishers and Printers.
Chicago-Zitierstil (17. Ausg.)Secondary Geography. First published 1983, fifth edition 2019. Nairobi: KLB, Kenya Literature Bureau, Publishers and Printers, 2023.
MLA-Zitierstil (9. Ausg.)Secondary Geography. First published 1983, fifth edition 2019. KLB, Kenya Literature Bureau, Publishers and Printers, 2023.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.