The Frick Collection (New York) : : A Guide to Works of Art on Exhibition.

MLA

Ryskamp, Charles. The Frick Collection (new York) : A Guide to Works of Art On Exhibition. New York City: The Frick Collection, 1989.

APA

Ryskamp, C. (1989). The Frick Collection (New York) : A Guide to Works of Art on Exhibition. New York City: The Frick Collection.

Chicago

Ryskamp, Charles The Frick Collection (new York): A Guide to Works of Art On Exhibition. New York City: The Frick Collection, 1989.