APA (7th ed.) Citation

Scudder, S. H. (1875). Historical Sketch of the generic names proposed for butterflies: A contribution to systematic nomenclature. Naturalist's Agency.

Chicago Style (17th ed.) Citation

Scudder, Samuel Hubbard. Historical Sketch of the Generic Names Proposed for Butterflies: A Contribution to Systematic Nomenclature. Salem: Naturalist's Agency, 1875.

MLA (9th ed.) Citation

Scudder, Samuel Hubbard. Historical Sketch of the Generic Names Proposed for Butterflies: A Contribution to Systematic Nomenclature. Naturalist's Agency, 1875.