APA (7e ed.) Bronvermelding

Baxter, E. L., Flender, M., & Landes, S. (1989). A literature guide to Sylvester and the magic pebble and Amos and Boris by William Steig. Book Wise.

Chicago (17e ed.) Bronvermelding

Baxter, Edith Lorraine, Molly Flender, en Sonia Landes. A Literature Guide to Sylvester and the Magic Pebble and Amos and Boris by William Steig. Cambridge: Book Wise, 1989.

MLA (9e ed.) Bronvermelding

Baxter, Edith Lorraine, et al. A Literature Guide to Sylvester and the Magic Pebble and Amos and Boris by William Steig. Book Wise, 1989.