Cita APA (7a ed.)

Broman, J., & Howarth, T. (1993). The world since 1900 (2. ed., 8. impression.). Longman.

Cita Chicago Style (17a ed.)

Broman, Josh, y Tony Howarth. The World Since 1900. 2. ed., 8. impression. Harlow: Longman, 1993.

Cita MLA (9a ed.)

Broman, Josh, y Tony Howarth. The World Since 1900. 2. ed., 8. impression. Longman, 1993.