Negi,S.S. (1985). Handbook of silvicultural systems. Bishen Sing Mahendra Sing.
Dyfyniad Arddull ChicagoNegi,S.S. Handbook of Silvicultural Systems. Dehradun: Bishen Sing Mahendra Sing, 1985.
Dyfyniad MLANegi,S.S. Handbook of Silvicultural Systems. Bishen Sing Mahendra Sing, 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.