MLA

Milne, A. A. (Alan Alexander), 1882-1956, Shepard, Ernest H. (Ernest Howard), 1879-1976. Winnie-the-Pooh / by A.A. Milne ; with decorations by Ernest H. Shepard. [1926]. https://collections.library.yale.edu/catalog/10691068.

APA, 6th edition

Milne, A. A. (Alan Alexander), 1882-1956, & Shepard, Ernest H. (Ernest Howard), 1879-1976. ([1926])[Winnie-the-Pooh / by A.A. Milne ; with decorations by Ernest H. Shepard]. https://collections.library.yale.edu/catalog/10691068.