APA (7th ed.) Citation

Ricks, C. B., Browning, E., & Browning, R. (1970). The Brownings: Letters and poetry. Doubleday.

Chicago Style (17th ed.) Citation

Ricks, Christopher B., Elizabeth Browning, and Robert Browning. The Brownings: Letters and Poetry. Garden City, N.Y: Doubleday, 1970.

MLA (9th ed.) Citation

Ricks, Christopher B., et al. The Brownings: Letters and Poetry. Doubleday, 1970.