APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.