Mr. Clemens and Mark Twain : a biography

MLA

Kaplan, Justin. and Gotham Book Mart Collection (University of Pennsylvania). Mr. Clemens and Mark Twain : a biography. Touchstone edition. New York : Simon and Schuster, 1983.

APA

Kaplan, J. & Gotham Book Mart Collection (University of Pennsylvania). (1983). Mr. Clemens and Mark Twain : a biography. Touchstone edition. New York : Simon and Schuster.

Chicago

Kaplan, Justin. and Gotham Book Mart Collection (University of Pennsylvania). Mr. Clemens and Mark Twain : a biography. Touchstone edition. New York : Simon and Schuster, 1983.