Ellis Publishing Company. (1897). Guide to the Ellis system of actual business training and practical accounting: A full course of instruction in business practice and elementary and advanced accounting, for the use of commercial schools (Rev. ed.). Ellis.
Παραπομπή σε μορφή Chicago (17η εκδ.)Ellis Publishing Company. Guide to the Ellis System of Actual Business Training and Practical Accounting: A Full Course of Instruction in Business Practice and Elementary and Advanced Accounting, for the Use of Commercial Schools. Rev. ed. Battle Creek: Ellis, 1897.
Παραπομπή σε μορφή MLA (8th εκδ.)Ellis Publishing Company. Guide to the Ellis System of Actual Business Training and Practical Accounting: A Full Course of Instruction in Business Practice and Elementary and Advanced Accounting, for the Use of Commercial Schools. Rev. ed. Ellis, 1897.