APA
Gatonye A. O. e. a., Andrew N Gatonye F. W. N. H. L. G. R. L. A. ., Njagi F. W. ., Gatimu H. L. . & Amanya R. L. . (2003). Progressive Primary Mathematics. Nairobi: Oxford University Press.
Chicago
Gatonye Andrew O et al, Andrew N Gatonye Francis W Njagi Hannah L Gatimu Radon L Amanya, Njagi Francis W, Gatimu Hannah L and Amanya Radon L. 2003. Progressive Primary Mathematics. Nairobi: Oxford University Press.
Harvard
Gatonye A. O. e. a., Andrew N Gatonye F. W. N. H. L. G. R. L. A. ., Njagi F. W. ., Gatimu H. L. . and Amanya R. L. . (2003). Progressive Primary Mathematics. Nairobi: Oxford University Press.
MLA
Gatonye Andrew O et al, Andrew N Gatonye Francis W Njagi Hannah L Gatimu Radon L Amanya, Njagi Francis W, Gatimu Hannah L and Amanya Radon L. Progressive Primary Mathematics. Nairobi: Oxford University Press. 2003.