Bean, J., & Barbieri, G. F. (1970). Guercino as a draughtsman. Master drawings, 7(428), .
Chicago Style CitationBean, Jacob, and Giovanni Francesco Barbieri. "Guercino As a Draughtsman." Master Drawings 7, no. 428 (1970).
MLA CitationBean, Jacob, and Giovanni Francesco Barbieri. "Guercino As a Draughtsman." Master Drawings 7.428 (1970).
Warning: These citations may not always be 100% accurate.