- Abhichandani, C.T. etal. (1973). Annals. In: Statistical Procedures for Agricultural Research. 2nd ed. Wiley Interscience Publishers New York (USA). I
- Gomes, K.A. and Gomez, A.A. (1984). Statistical Procedures for Agricultural Research. 2nd ed. John Wiley, N.Y.
- Lal, M. (19cH). Ph.D. Thesis, G.B.P.UA & T., Pantnagar (Uttaranchal).
- Kushwaha, HS. (1997)./ndianJ. Agron. 42: 205-209.
- Mali, A.L. eta/. (2009). Agric. Sci. Digest 20 : 168-170.
- Rajput, RK. (1983). Pakistan J. Agric. Res. 4 : 116-170.