APA (7th ed.) Citation

Foster, J. O. (1931). Portrait by Pine sold at Christie's 13. 3. 1931.

Chicago Style (17th ed.) Citation

Foster, John Oriel. Portrait by Pine Sold at Christie's 13. 3. 1931. 1931.

MLA (9th ed.) Citation

Foster, John Oriel. Portrait by Pine Sold at Christie's 13. 3. 1931. 1931.

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