Roy B. Kester, Accounting theory and practice… (1922)
“ There is some difference of opinion as to whether the figure of net operating profit should be arrived at before considering any of the items of financial management, i.e., as to whether such items as interest income and expense, cash discount items, bad debts, etc., which are more or less common to every business, should be included before determining net operating profit or should be set up separately after its determination. ”
