JASMI. , SALMAHS., DAHELMI. and SYAMSUARDI. (2014) “Nesting Sites Apis cerana Fabr. (Hymenoptera: Apidae) in Two Different Altitutes of Polyculture Plantations in West Sumatera”, HAYATI Journal of Biosciences, 21(3), p. 135. doi: 10.4308/hjb.21.3.135.