Oil sketches of Peter Paul Rubens : : A Critical Catalogue.

MLA

Held, Julius Samuel. Oil Sketches of Peter Paul Rubens : A Critical Catalogue. Princeton-New Jersey: Princeton University Press, 1980.

APA

Held, J. Samuel. (1980). Oil sketches of Peter Paul Rubens : A Critical Catalogue. Princeton-New Jersey: Princeton University Press.

Chicago

Held, Julius Samuel Oil Sketches of Peter Paul Rubens: A Critical Catalogue. Princeton-New Jersey: Princeton University Press, 1980.