P.  Bunchalee, Chantaranothai, P., Johnson, D. M., and Murray, N. A., ?Polyalthia khaoyaiensis (Annonaceae), a new species from Thailand?, Phytotaxa, vol. 405, pp. 171?179, 2019.

R. M. K.  Saunders, ?The genus Goniothalamus (Annonaceae) in Sumatra?, Botanical Journal of the Linnean SocietyBotanical Journal of the Linnean Society, vol. 139, pp. 225-254, 2002.