APA (7th ed.) Citation

Beck, J. H. Jacopo della Quercia's portal of San Petronio in Bologna.

Chicago Style (17th ed.) Citation

Beck, James H. Jacopo Della Quercia's Portal of San Petronio in Bologna. [S.l.].

MLA (9th ed.) Citation

Beck, James H. Jacopo Della Quercia's Portal of San Petronio in Bologna.

Warning: These citations may not always be 100% accurate.