TAUFIK, MUHAMMAD, et al. “Evaluation of Plant Growth Promoting Rhizobacteria As a Protecting Agent Against Cucumber Mosaic Virus and Chilli Veinal Mottle Virus on Chillipepper”. HAYATI Journal of Biosciences, vol. 12, no. 4, Dec. 2009, p. 139, https://doi.org/10.4308/hjb.12.4.139.