Thirty years a detective :
a thorough and comprehensive exposé of criminal practices of all grades and classes, containing numerous episodes of personal experience in the detection of criminals, and covering a period of thirty years' active detective life /
by Allan Pinkerton.

APA Citation

Pinkerton, A., American Popular Literature Collection. (1884). Thirty years a detective: a thorough and comprehensive exposé of criminal practices of all grades and classes, containing numerous episodes of personal experience in the detection of criminals, and covering a period of thirty years' active detective life. New York: G. W. Carleton.

MLA Citation

Pinkerton, Allan, 1819-1884, and American Popular Literature Collection. Thirty Years a Detective: a Thorough And Comprehensive Exposé of Criminal Practices of All Grades And Classes, Containing Numerous Episodes of Personal Experience In the Detection of Criminals, And Covering a Period of Thirty Years' Active Detective Life. New York: G. W. Carleton, 1884.