APA (7th ed.) Citation

Housman, A. E., Hill, E. B., & Starrett, V. (1928). R.L.S. [Vincent Starrett?].

Chicago Style (17th ed.) Citation

Housman, A. E., Edwin Bliss Hill, and Vincent Starrett. R.L.S. [Chicago?]: [Vincent Starrett?], 1928.

MLA (9th ed.) Citation

Housman, A. E., et al. R.L.S. [Vincent Starrett?], 1928.