Literature
  • 1997
  • Notes on the orchids of New Guinea and the Pacific. Australian Orchid Rev. 62, 3: 13-15.
  • 1999
  • Genera Orchidacearum, Volume 1: General introduction, Apostasioideae, Cypripedioidae. Oxford University Press, Oxford.
  • 2001
  • Genera Orchidacearum, Volume 2: Orchidoideae (Part one). Oxford University Press, Oxford.
  • 2003
  • Genera Orchidacearum, Volume 3: Orchidoideae (Part two), Vanilloideae. Oxford University Press, Oxford.
  • 2005
  • Genera Orchidacearum, Volume 4: Epidendroideae (Part one). Oxford University Press, Oxford.
  • 2009
  • Genera Orchidacearum, Volume 5: Epidendroideae (Part two). Oxford University Press, Oxford.