APA (7th ed.) Citation

(1600). [A seated ruler, possibly the pope, bent over with an open book on his shoulders]. s.n..

Chicago Style (17th ed.) Citation

[A Seated Ruler, Possibly the Pope, Bent over with an Open Book on His Shoulders]. [S.l.: s.n., 1600.

MLA (8th ed.) Citation

[A Seated Ruler, Possibly the Pope, Bent over with an Open Book on His Shoulders]. s.n., 1600.

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