Cita APA (7a ed.)

Rocks, L. (1980). Fuels for tomorrow. PennWell Books.

Cita Chicago Style (17a ed.)

Rocks, Lawrence. Fuels for Tomorrow. Tulsa: PennWell Books, 1980.

Cita MLA (9a ed.)

Rocks, Lawrence. Fuels for Tomorrow. PennWell Books, 1980.