Zotsitsa ndi Zochokera
1) Buku la Mphunzitsi la Kulima mu Njira ya Mulungu. GW Dryden, 2009.
2) A-Z ya Kulima Masamba ku South Africa. J Hadfield, 2001.
3) Ulimi osagwira ntchito, Ruth Stout, 1979.
4) FAO- mapepala a mbewu ‘’data’’.
5) Ulimi wa chilengedwe njira yosatembenuza nthaka. Charles Dowding, 2010.
6) Kupanga zakudya popanda kugwiritsa ntchito mankhwala. L.J. Fuglie, 1998