Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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