London : Gee & co., 1906
3d ed.

New York : Arno Press, 1976

New York : Arno Press, 1976

London : Gee, 1907
2d ed.

London, New York [etc.] : Longmans, Green, and co., 1910

New York, 1905
Authorized American ed.

Cambridge : University press, 1915

New York : Arno Press, 1976

New York : Arno Press, 1976
Authorized American ed.

London : [publisher not identified], 1907
Ed. 3.

London : Gee & co., ltd., 1927

Detroit, Mich. : The business man's publishing company limited, 1908
Authorized American ed.

London : Sir. I. Pitnam & sons, ltd., 1906

New York : Arno Press, 1976

London : [publisher not identified], 1904
Ed. 2.

London : Gee & co., 1905