Citação norma APA

Helm, S. (2007). A life in secrets: Vera Atkins and the missing Agents of WW II - A Story of the men and women who waged Churchill's secret war. Anchor Books.

Citação norma Chicago

Helm, Sarah. A Life in Secrets: Vera Atkins and the Missing Agents of WW II - A Story of the Men and Women Who Waged Churchill's Secret War. New York: Anchor Books, 2007.

Citação norma MLA

Helm, Sarah. A Life in Secrets: Vera Atkins and the Missing Agents of WW II - A Story of the Men and Women Who Waged Churchill's Secret War. Anchor Books, 2007.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.