MLA

Petrillo, Madeline, and Sirgay Sanger. Emotional Care of Hospitalized Children : an Environmental Approach. Philadelphia,: Lippincott, 1972.

APA

Petrillo, M., & Sanger, S. (1972). Emotional care of hospitalized children : an environmental approach. Philadelphia,: Lippincott.

Chicago

Petrillo, Madeline, and Sirgay Sanger. Emotional Care of Hospitalized Children: An Environmental Approach. Philadelphia,: Lippincott, 1972.