Armstrong, A. M. (1988) “Light trap studies of Heliothis virescens (Fabricius) and Etiella zinckenella (Treitschke) in pigeon pea (Cajanus cajan Millsp.) fields”, The Journal of Agriculture of the University of Puerto Rico, 72(4), pp. 557–563. doi: 10.46429/jaupr.v72i4.8004.