Sheehan, D. (1981). Shut up and sell: Tested techniques for closing the sale / Don Sheehan ; foreword by Norman Vincent Peale. National Book Store.
芝加哥风格引文Sheehan, Don. Shut Up and Sell: Tested Techniques for Closing the Sale / Don Sheehan ; Foreword by Norman Vincent Peale. [Manila]: National Book Store, 1981.
MLA引文Sheehan, Don. Shut Up and Sell: Tested Techniques for Closing the Sale / Don Sheehan ; Foreword by Norman Vincent Peale. National Book Store, 1981.
警告：这些引文格式不一定是100％准确.