APA (7e ed.) Bronvermelding

Ravenal, J. B., & Jacobson, T. (1998). Twenty Philadelphia artists: Celebrating Fleisher Challenge at twenty. Philadelphia Museum of Art.

Chicago (17e ed.) Bronvermelding

Ravenal, John B., en Thora Jacobson. Twenty Philadelphia Artists: Celebrating Fleisher Challenge at Twenty. Philadelphia, Pa.: Philadelphia Museum of Art, 1998.

MLA (8e ed.) Bronvermelding

Ravenal, John B., en Thora Jacobson. Twenty Philadelphia Artists: Celebrating Fleisher Challenge at Twenty. Philadelphia Museum of Art, 1998.