MLA

Willems, Mo. Don't Pigeonhole Me! : Two Decades of the Mo Willems Sketchbook / Mo Willems, with a Foreword by Eric Carle. Disney Editions, 0AD. https://collections.library.yale.edu/catalog/15498747.

APA, 6th edition

Willems, M. (0 C.E.). Don't pigeonhole me! : two decades of the Mo Willems sketchbook / Mo Willems, with a foreword by Eric Carle. [Notebooks, sketchbooks, etc.--(OCoLC)fst01423820]. Disney Editions, https://collections.library.yale.edu/catalog/15498747.