MLA

Walker, William, 1905-. Souvenir program : 1934 to 1945, the 11th anniversary of William Walker, poet & author : Sunday, September 16, 1945 .... 1945?]. https://collections.library.yale.edu/catalog/11580353.

APA, 6th edition

Walker, William, 1905-. (1945?])[Souvenir program : 1934 to 1945, the 11th anniversary of William Walker, poet & author : Sunday, September 16, 1945 ...]. https://collections.library.yale.edu/catalog/11580353.