MLA

Barnes, Albert C. (Albert Coombs), 1872-1951, Johnson, Charles Spurgeon, (1893-1956). Ebony and topaz : a collectanea / edited by Charles S. Johnson.. [c1927]. https://collections.library.yale.edu/catalog/11218509.

APA, 6th edition

Barnes, Albert C. (Albert Coombs), 1872-1951, & Johnson, Charles Spurgeon, (1893-1956). ([c1927])[Ebony and topaz : a collectanea / edited by Charles S. Johnson.]. https://collections.library.yale.edu/catalog/11218509.