APA (7th ed.) Citation

De Tolnay, C. (1969). A contribution to Pieter Bruegel the elder as draughtsman.

Chicago Style (17th ed.) Citation

De Tolnay, Charles. A Contribution to Pieter Bruegel the Elder as Draughtsman. 1969.

MLA (9th ed.) Citation

De Tolnay, Charles. A Contribution to Pieter Bruegel the Elder as Draughtsman. 1969.

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