Gibbons, J. (1870). Circular: To the Officers and Members of the F.B., July 1, 1870.
Chicago-viite (17. p.)Gibbons, James. Circular: To the Officers and Members of the F.B., July 1, 1870. 1870.
MLA-viite (8. p.)Gibbons, James. Circular: To the Officers and Members of the F.B., July 1, 1870. 1870.
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