APA (7th ed.) Citation

Cooper, K. S., Sorensen, C. W., & Todd, L. P. (1961). Learning to look at our world. Silver Burdett.

Chicago Style (17th ed.) Citation

Cooper, Kenneth S., Clarence W. Sorensen, and Lewis Paul Todd. Learning to Look at Our World. Morristown, NJ: Silver Burdett, 1961.

MLA (9th ed.) Citation

Cooper, Kenneth S., et al. Learning to Look at Our World. Silver Burdett, 1961.