APA (7th ed.) Citation

Browning, E. B., Ratchford, F. E., & Beilenson, P. (1950). Sonnets from the Portuguese (Centennial variorum ed.). P.C. Duschnes.

Chicago Style (17th ed.) Citation

Browning, Elizabeth Barrett, Fannie Elizabeth Ratchford, and Peter Beilenson. Sonnets from the Portuguese. Centennial variorum ed. New York: P.C. Duschnes, 1950.

MLA (9th ed.) Citation

Browning, Elizabeth Barrett, et al. Sonnets from the Portuguese. Centennial variorum ed. P.C. Duschnes, 1950.