APA (7th ed.) Citation

Lewis, C. S., Hooper, W., & Greeves, A. (1979). They stand together: The letters of C. S. Lewis to Arthur Greeves (1914 - 1963) (1. publ.). Collins.

Chicago Style (17th ed.) Citation

Lewis, C. S., Walter Hooper, and Arthur Greeves. They Stand Together: The Letters of C. S. Lewis to Arthur Greeves (1914 - 1963). 1. publ. London: Collins, 1979.

MLA (8th ed.) Citation

Lewis, C. S., et al. They Stand Together: The Letters of C. S. Lewis to Arthur Greeves (1914 - 1963). 1. publ. Collins, 1979.