Cita APA (7th ed.)

Norrie, I. (1985). Sixty precarious years: A short history of the National Book League, 1925-1985. National Book League.

Cita Chicago (17th ed.)

Norrie, Ian. Sixty Precarious Years: A Short History of the National Book League, 1925-1985. London: National Book League, 1985.

Cita MLA (8th ed.)

Norrie, Ian. Sixty Precarious Years: A Short History of the National Book League, 1925-1985. National Book League, 1985.