एपीए उद्धरण

Pupulin, F., Karremans Lok, A. P., & Gravendeel, B. (2012). A reconsideration of the empusellous species of Specklinia (Orchidaceae: Pleurothallidinae) in Costa Rica.

शिकागो स्टाइल उद्धरण

Pupulin, Franco, Adam Philip Karremans Lok, और Barbara Gravendeel. A Reconsideration of the Empusellous Species of Specklinia (Orchidaceae: Pleurothallidinae) in Costa Rica. 2012.

एमएलए उद्धरण

Pupulin, Franco, Adam Philip Karremans Lok, और Barbara Gravendeel. A Reconsideration of the Empusellous Species of Specklinia (Orchidaceae: Pleurothallidinae) in Costa Rica. 2012.