Cita APA (7a ed.)

Lesquereux, L. Description of the coal flora of the carboniferous formation in Pennsylvania and throughout the United Satates.

Cita Chicago Style (17a ed.)

Lesquereux, Leo. Description of the Coal Flora of the Carboniferous Formation in Pennsylvania and Throughout the United Satates. Harrisburg.

Cita MLA (8a ed.)

Lesquereux, Leo. Description of the Coal Flora of the Carboniferous Formation in Pennsylvania and Throughout the United Satates.