Home › Authors › Mary Schaeffer 👤 Mary Schaeffer 4 books Books by Mary Schaeffer Internal Controls in Accounts Payable 2014 Essentials of Accounts Payable 2002 The 1999 Managing Accounts Pay The 1999 Managing Accounts Payable Yearbook 1999 The 1999 Managing Credit, Rece The 1999 Managing Credit, Receivables & Collections Yearbook 1999