Roy B. Kester, Accounting theory and practice… (1922)
“ In all problems calling for financial statements, the trial balance should first be tested as to the equality of debits and credits. As stated above, the method of the work sheet is usually the best method for summarizing results, although sometimes skeleton ledger accounts will be found helpful in order to visualize the effect of entries and to trace their course through the accounts. Only painstaking work and the solution of many problems will produce facility and confidence in work of this kind. ”
