APA (7th ed.) Citation

Ortiz, P. N. (1899). Cabinet Card Portrait of Mrs. May Williams.

Chicago Style (17th ed.) Citation

Ortiz, Pedro N. Cabinet Card Portrait of Mrs. May Williams. 1899.

MLA (8th ed.) Citation

Ortiz, Pedro N. Cabinet Card Portrait of Mrs. May Williams. 1899.

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