Hedström, I., & Sahlén, G. (2001). A key to the adult Costa Rican “helicopter” damselflies (Odonata: Pseudostigmatidae) with notes on their phenology and life zone preferences.
Citação norma ChicagoHedström, Ingemar, y Göran Sahlén. A Key to the Adult Costa Rican “helicopter” Damselflies (Odonata: Pseudostigmatidae) With Notes On Their Phenology and Life Zone Preferences. 2001.
Citação norma MLAHedström, Ingemar, y Göran Sahlén. A Key to the Adult Costa Rican “helicopter” Damselflies (Odonata: Pseudostigmatidae) With Notes On Their Phenology and Life Zone Preferences. 2001.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.