APA (7th ed.) Citation

Seligman, E. R. A. Principles of Economics. Longmans, Green and Co. (London).

Chicago Style (17th ed.) Citation

Seligman, Edwin Robert Anderson. Principles of Economics. Longmans, Green and Co. (London).

MLA (8th ed.) Citation

Seligman, Edwin Robert Anderson. Principles of Economics. Longmans, Green and Co. (London).

Warning: These citations may not always be 100% accurate.