APA-Zitierstil (7. Ausg.)

Giddens, P. H. (1964). Early days of oil: A pictorial history of the beginnings of the industry in Pennsylvania (Reprint.). Smith.

Chicago-Zitierstil (17. Ausg.)

Giddens, Paul Henry. Early Days of Oil: A Pictorial History of the Beginnings of the Industry in Pennsylvania. Reprint. Gloucester, Mass: Smith, 1964.

MLA-Zitierstil (9. Ausg.)

Giddens, Paul Henry. Early Days of Oil: A Pictorial History of the Beginnings of the Industry in Pennsylvania. Reprint. Smith, 1964.