Early printed books

MLA

Duff, and Duff,Edward Gordon Duff,Edward Gordon. Early Printed Books. London: Paul, Trench, Trübner, 1893.

APA

Duff, D., & Duff,Edward Gordon, D. Gordon. (1893). Early printed books. London: Paul, Trench, Trübner.

Chicago

Duff, and Duff,Edward Gordon Duff,Edward Gordon. Early Printed Books. London: Paul, Trench, Trübner, 1893.