APA (7th ed.) Citation

J. Cortland, D. (2004). A look at books: Learning to count by tens to 50. The Rosen Publishing Group, Inc..

Chicago Style (17th ed.) Citation

J. Cortland, D. A Look at Books: Learning to Count by Tens to 50. New York: The Rosen Publishing Group, Inc., 2004.

MLA (9th ed.) Citation

J. Cortland, D. A Look at Books: Learning to Count by Tens to 50. The Rosen Publishing Group, Inc., 2004.