APA (7th ed.) Citation

Armstrong, W. H., & Barkley, J. (1969). Sounder. Scholastic.

Chicago Style (17th ed.) Citation

Armstrong, William H., and James Barkley. Sounder. New York: Scholastic, 1969.

MLA (9th ed.) Citation

Armstrong, William H., and James Barkley. Sounder. Scholastic, 1969.