APA (7th ed.) Citation

Urquhart, W. P. (1850). Essays on subjects in political economy. D. Wyllie.

Chicago Style (17th ed.) Citation

Urquhart, William Pollard. Essays on Subjects in Political Economy. Aberdeen: D. Wyllie, 1850.

MLA (9th ed.) Citation

Urquhart, William Pollard. Essays on Subjects in Political Economy. D. Wyllie, 1850.