Goodavage, M. (2016). Secret service dogs: The heroes who protect the President of the United States. Dutton.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGoodavage, Maria. Secret Service Dogs: The Heroes Who Protect the President of the United States. New York, New York: Dutton, 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGoodavage, Maria. Secret Service Dogs: The Heroes Who Protect the President of the United States. Dutton, 2016.
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