Hunt, R. N. C., & Schapiro, L. (1977). The theory and practice of communism: An introduction / R. N. Carew Hunt. With a preface by Leonard Schapiro. Penguin books.

Hunt, R. N. Carew, and Leonard Schapiro. The Theory and Practice of Communism: An Introduction / R. N. Carew Hunt. With a Preface by Leonard Schapiro. Harmondsworth, Engl.: Penguin books, 1977.

Hunt, R. N. Carew, and Leonard Schapiro. The Theory and Practice of Communism: An Introduction / R. N. Carew Hunt. With a Preface by Leonard Schapiro. Penguin books, 1977.