APA aipamena

Villalobos, C. R. (1973). Ptychophallus costaricensis, a new freshwater crab from Costa Rica.

Chicago Style aipamena

Villalobos, Carlos R. Ptychophallus Costaricensis, a New Freshwater Crab From Costa Rica. 1973.

MLA aipamena

Villalobos, Carlos R. Ptychophallus Costaricensis, a New Freshwater Crab From Costa Rica. 1973.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.