The world is round

MLA

Stein, Gertrude, and Edith Thacher Hurd. The World Is Round. 75th anniversary ed. New York: Harper Design, 2013.

APA

Stein, G., & Hurd, E. Thacher. (2013). The world is round. 75th anniversary ed. New York: Harper Design.

Chicago

Stein, Gertrude, and Edith Thacher Hurd. The World Is Round. 75th anniversary ed. New York: Harper Design, 2013.