Suwanphakdee, C., T. R. Hodkinson, and P. Chantaranothai. “New species and a revision of the genus Peperomia (Piperaceae) in Thailand”. Thai Forest Bulletin (Botany), vol. 50, no. 2, Sept. 2022, pp. 104-19, doi:10.20531/tfb.2022.50.2.11.