APA

Curzon L. . B., . (1977). Objective Tests in Economics. London: The English Language Book Society.

Chicago

Curzon L B, . 1977. Objective Tests in Economics. London: The English Language Book Society.

Harvard

Curzon L. . B., . (1977). Objective Tests in Economics. London: The English Language Book Society.

MLA

Curzon L B, . Objective Tests in Economics. London: The English Language Book Society. 1977.