APA (7e ed.) Bronvermelding

Vari, R. P. (1986). The catfishes of the neotropical family Helogenidae (Ostrariophysi: Situroidei). Smithsonian Institution Press.

Chicago (17e ed.) Bronvermelding

Vari, Richard P. The Catfishes of the Neotropical Family Helogenidae (Ostrariophysi: Situroidei). Washington: Smithsonian Institution Press, 1986.

MLA (9e ed.) Bronvermelding

Vari, Richard P. The Catfishes of the Neotropical Family Helogenidae (Ostrariophysi: Situroidei). Smithsonian Institution Press, 1986.