Belgium. Home and Public Instruction Dept & Louisiana Purchase Exposition. (1904). Commercial sciences. Impr. Polleunis et Ceuterick.
Chicago-viite (17. p.)Belgium. Home and Public Instruction Dept ja Louisiana Purchase Exposition. Commercial Sciences. Brussels: Impr. Polleunis et Ceuterick, 1904.
MLA-viite (8. p.)Belgium. Home and Public Instruction Dept ja Louisiana Purchase Exposition. Commercial Sciences. Impr. Polleunis et Ceuterick, 1904.
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