Cita APA (7a ed.)

Powell, K. M. (2009). "Answer at Once": Letters of Mountain Families in Shenandoah National Park, 1934-1938. University of Virginia Press.

Cita Chicago Style (17a ed.)

Powell, Katrina M. "Answer at Once": Letters of Mountain Families in Shenandoah National Park, 1934-1938. Charlottesville: University of Virginia Press, 2009.

Cita MLA (8a ed.)

Powell, Katrina M. "Answer at Once": Letters of Mountain Families in Shenandoah National Park, 1934-1938. University of Virginia Press, 2009.