Singer, J. L., Biblow, E., Freyberg, J. T., Gottlieb, S., & Pulaski, M. A. (1973). The child's world of make-believe: Experimental studies of imaginative play. Academic Press.
Chicago Style (17th ed.) CitationSinger, Jerome L., Ephraim Biblow, Joan T. Freyberg, Sybil Gottlieb, and Mary Ann Pulaski. The Child's World of Make-believe: Experimental Studies of Imaginative Play. New York, NY: Academic Press, 1973.
MLA (9th ed.) CitationSinger, Jerome L., et al. The Child's World of Make-believe: Experimental Studies of Imaginative Play. Academic Press, 1973.
Warning: These citations may not always be 100% accurate.