Yoshimura, Isao; Sharp, Aaron J. (1968). "A revision of the genus Gymnoderma". American Journal of Botany. 55 (5): 635–640. doi:10.2307/2440620. JSTOR2440620.
Yoshimura, Isao; Sharp, Aaron J. (1968). "A revision of the genus Gymnoderma". American Journal of Botany. 55 (5): 635–640. doi:10.2307/2440620. JSTOR2440620.