APA (7th ed.) Citation

Johnson, H. G. 1. (1971). Aspects of the theory of tariffs. Allen & Unwin.

Chicago Style (17th ed.) Citation

Johnson, Harry Gordon 1923. Aspects of the Theory of Tariffs. London: Allen & Unwin, 1971.

MLA (9th ed.) Citation

Johnson, Harry Gordon 1923. Aspects of the Theory of Tariffs. Allen & Unwin, 1971.