Harper, G. M., Yeats, W. B., & Horton, W. T. (1980). W.B. Yeats and W.T. Horton : the record of an occult friendship / George Mills Harper: The record of an occult friendship. (Macmillan).
Chicago Style (17th ed.) CitationHarper, George Mills, W. B. Yeats, and W. T. Horton. W.B. Yeats and W.T. Horton : The Record of an Occult Friendship / George Mills Harper: The Record of an Occult Friendship. (London): (Macmillan), 1980.
MLA (9th ed.) CitationHarper, George Mills, et al. W.B. Yeats and W.T. Horton : The Record of an Occult Friendship / George Mills Harper: The Record of an Occult Friendship. (Macmillan), 1980.
Warning: These citations may not always be 100% accurate.