APA (7th ed.) Citation

Roper, J. F. (1970). The teaching of economics at university level. Harrap.

Chicago Style (17th ed.) Citation

Roper, John F. The Teaching of Economics at University Level. London: Harrap, 1970.

MLA (9th ed.) Citation

Roper, John F. The Teaching of Economics at University Level. Harrap, 1970.