Karremans Lok, A. P. (2009). Prosthechea madrensis, a reconsideration of Epidendrum madrense Schltr. (Orchidaceae: Laeliinae).
शिकागो स्टाइल उद्धरणKarremans Lok, Adam Philip. Prosthechea Madrensis, a Reconsideration of Epidendrum Madrense Schltr. (Orchidaceae: Laeliinae). 2009.
एमएलए उद्धरणKarremans Lok, Adam Philip. Prosthechea Madrensis, a Reconsideration of Epidendrum Madrense Schltr. (Orchidaceae: Laeliinae). 2009.
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