APA (7th ed.) Citation

Robbins, L. C. (1954). The economist in the twentieth Century. Macmillan and Co.

Chicago Style (17th ed.) Citation

Robbins, Lionel Charles. The Economist in the Twentieth Century. London [etc.]: Macmillan and Co, 1954.

MLA (9th ed.) Citation

Robbins, Lionel Charles. The Economist in the Twentieth Century. Macmillan and Co, 1954.