APA (7th ed.) Citation

Elvira & Perkins, J. G. (1858). Harp of the willows.

Chicago Style (17th ed.) Citation

Elvira and Judith Grant Perkins. Harp of the Willows. 1858.

MLA (9th ed.) Citation

Elvira and Judith Grant Perkins. Harp of the Willows. 1858.

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