APA način citiranja

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

Čikaški stil citiranja

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

MLA način citiranja

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