APA (7th ed.) Citation

Schulz, C. M. (1977). It's Arbor Day, Charlie Brown. Scholastic Book Services.

Chicago Style (17th ed.) Citation

Schulz, Charles M. It's Arbor Day, Charlie Brown. New York: Scholastic Book Services, 1977.

MLA (9th ed.) Citation

Schulz, Charles M. It's Arbor Day, Charlie Brown. Scholastic Book Services, 1977.