Cita APA (7a ed.)

Higgins, R. (1982). The seventh enemy: The human factor in the global crisis (Updated ed.). Hodder and Stoughton.

Cita Chicago Style (17a ed.)

Higgins, Ronald. The Seventh Enemy: The Human Factor in the Global Crisis. Updated ed. London [etc.]: Hodder and Stoughton, 1982.

Cita MLA (9a ed.)

Higgins, Ronald. The Seventh Enemy: The Human Factor in the Global Crisis. Updated ed. Hodder and Stoughton, 1982.