APA (7th ed.) Citation

Bernstein, R. B., & Agel, J. (1989). Into the third century. Walker.

Chicago Style (17th ed.) Citation

Bernstein, Richard B., and Jerome Agel. Into the Third Century. New York: Walker, 1989.

MLA (9th ed.) Citation

Bernstein, Richard B., and Jerome Agel. Into the Third Century. Walker, 1989.