APA
Sayre N. E., Gallagher J. D., . (2001). The young child and the environment : issues related to health, nutrition, safety, and physical activity. Boston, MA: Allyn and Bacon.
Chicago
Sayre Nancy E, Gallagher Jere Dee, . 2001. The young child and the environment : issues related to health, nutrition, safety, and physical activity. Boston, MA: Allyn and Bacon.
Harvard
Sayre N. E., Gallagher J. D., . (2001). The young child and the environment : issues related to health, nutrition, safety, and physical activity. Boston, MA: Allyn and Bacon.
MLA
Sayre Nancy E, Gallagher Jere Dee, . The young child and the environment : issues related to health, nutrition, safety, and physical activity. Boston, MA: Allyn and Bacon. 2001.