(1971). People helping people: U.S. volunteers in action. Books by U.S. News & World Report.
Citação do estilo Chicago (17ª ed.)People Helping People: U.S. Volunteers in Action. Washington: Books by U.S. News & World Report, 1971.
Citação MLA (9ª ed.)People Helping People: U.S. Volunteers in Action. Books by U.S. News & World Report, 1971.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.