APA

Suomalainen E., Cook L. M. & Turner J. R. G.Chromosome numbers of Heliconiine butterflies from Trinidad, west Indies (<Lepidoptera, Nymphalidae>). : .

Chicago

Suomalainen Esko, Cook Laurence M and Turner John R G.Chromosome numbers of Heliconiine butterflies from Trinidad, west Indies (<Lepidoptera, Nymphalidae>). : .

Harvard

Suomalainen E., Cook L. M. and Turner J. R. G.Chromosome numbers of Heliconiine butterflies from Trinidad, west Indies (<Lepidoptera, Nymphalidae>). : .

MLA

Suomalainen Esko, Cook Laurence M and Turner John R G.: . .