Quentin Jam is a new accountant assisting in the month-end close of the books for Sheldrake, Ltd. His supervisor told him to accrue a large receivable and said that he would provide the supporting documentation later. Jam made the accrual, and the books were closed. Subsequently, Jam found out that the company would have missed the earnings estimate without the receivable. Jam requested the documentation, but the supervisor could not provide it. Other associates told Jam that this supervisor had directed that undocumented entries be recorded in the books in the past and that the former accountant had left Sheldrake because he was uncomfortable making the entries. Recommend the best course of action for Jam.