APA (7th ed.) Citation

Thomas, E., Thomas, H., Thomas, M., Thomas, R. G., & Weissenborn, H. (2000). Personal letters. Whittington Press.

Chicago Style (17th ed.) Citation

Thomas, Edward, Helen Thomas, Myfanwy Thomas, R. George Thomas, and Hellmuth Weissenborn. Personal Letters. Risbury, Herefordshire: Whittington Press, 2000.

MLA (8th ed.) Citation

Thomas, Edward, et al. Personal Letters. Whittington Press, 2000.