Ko Ko. 2009. Insecticidal activities of three essential oils against Sitophilus zeamais Motschulsky and Tribolium castaneum (Herbst). Faculty of Agriculture, Kasetsart University; DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/KU.the.2009.629
Ko Ko. (2009) Insecticidal activities of three essential oils against Sitophilus zeamais Motschulsky and Tribolium castaneum (Herbst) . Kasetsart University/Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/KU.the.2009.629
Ko Ko. Insecticidal activities of three essential oils against Sitophilus zeamais Motschulsky and Tribolium castaneum (Herbst). . Bangkok:Kasetsart University, 2009. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/KU.the.2009.629
Ko Ko. (2009) Insecticidal activities of three essential oils against Sitophilus zeamais Motschulsky and Tribolium castaneum (Herbst) . Kasetsart University/Bangkok. DOI : https://doi.nrct.go.th/ListDoi/listDetail?Resolve_DOI=10.14457/KU.the.2009.629