Cita APA (7a ed.)

Robertson, D. H. (1958). Lectures on economic principles (1st published.). Staples.

Cita Chicago Style (17a ed.)

Robertson, Dennis Holme. Lectures on Economic Principles. 1st published. London: Staples, 1958.

Cita MLA (9a ed.)

Robertson, Dennis Holme. Lectures on Economic Principles. 1st published. Staples, 1958.