Klein, Carole, Doris Lessing: A Biography, Carroll and Graf Publishers, 2000.

Klein's biography discusses Lessing's life after the publication of The Golden Notebook.

Knapp, Mona, Doris Lessing, Frederick Ungar Publishing, 1984.

Knapp's text is a solid study of Lessing's literary works, including her plays. Knapp's study includes an excellent bibliography of Lessing criticism, reviews, and interviews.

Lessing, Doris, Walking in the Shade: Volume Two of My Autobiography, 1949—1962, HarperPerrenial, 1997.

This second volume in Lessing's multivolume autobiography covers the period during which she wrote Play with a Tiger.

Sprague, Claire, and Virginia Tiger, Critical Essays on Doris Lessing, G. K. Hall, 1986.

Sprague and Tiger's collection includes essays covering all aspects of Lessing's literary career. It also contains a chronology of Lessing's life and publications and a good introductory overview of her work and career.

Wills, A. J., An Introduction to the History of Central Africa, Oxford University Press...