Ravenal, J. B., & Jacobson, T. (1998). Twenty Philadelphia artists: Celebrating Fleisher Challenge at twenty. Philadelphia Museum of Art.
Cita Chicago (17th ed.)Ravenal, John B., i Thora Jacobson. Twenty Philadelphia Artists: Celebrating Fleisher Challenge at Twenty. Philadelphia, Pa.: Philadelphia Museum of Art, 1998.
Cita MLA (8th ed.)Ravenal, John B., i Thora Jacobson. Twenty Philadelphia Artists: Celebrating Fleisher Challenge at Twenty. Philadelphia Museum of Art, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.