International Orchid Commission on Classification, N., Dillon, G. W. 1., Gilmour, J. S. L. 1., Greatwood, J., Kirsch, O. M., & Moir, W. W. G. 1. (1969). Handbook on orchid nomenclature and registration (First edition.). Cambridge, Massachusetts: International Orchid Commission.

International Orchid Commission on Classification, Nomenclature, Gordon Winston 1912-1982 Dillon, John Scott Lennox 1906-1986 Gilmour, J. Greatwood, Oscar M. Kirsch, and William Whitmore Goodale 1896-1985 Moir. Handbook On Orchid Nomenclature and Registration. First edition. Cambridge, Massachusetts: International Orchid Commission, 1969.

International Orchid Commission on Classification, Nomenclature, et al. Handbook On Orchid Nomenclature and Registration. First edition. Cambridge, Massachusetts: International Orchid Commission, 1969.