American Philosophical Society. Library & Carroll, P. T. (1976). An annotated calendar of the letters of Charles Darwin in the Library of the American Philosophical Society. Scholarly Resources.
Chicago Style (17th ed.) CitationAmerican Philosophical Society. Library and P. Thomas Carroll. An Annotated Calendar of the Letters of Charles Darwin in the Library of the American Philosophical Society. Wilmington, Del.: Scholarly Resources, 1976.
MLA (9th ed.) CitationAmerican Philosophical Society. Library and P. Thomas Carroll. An Annotated Calendar of the Letters of Charles Darwin in the Library of the American Philosophical Society. Scholarly Resources, 1976.
Warning: These citations may not always be 100% accurate.