APA

Brown K. S., Benson W. W., .West colombian biogeography. Notes on Heliconius Hecalesia and H. sapho (<Nymphalidae>). : .

Chicago

Brown Keith S, Benson Woodruff W, .West colombian biogeography. Notes on Heliconius Hecalesia and H. sapho (<Nymphalidae>). : .

Harvard

Brown K. S., Benson W. W., .West colombian biogeography. Notes on Heliconius Hecalesia and H. sapho (<Nymphalidae>). : .

MLA

Brown Keith S, Benson Woodruff W, .: . .