Sekaran, Uma. Qi ye yen jiu fang fa : Research methods for business / a skill-building approach 企业研究方法 Uma Sekaran and Roger Bougie. - 5th ed. - Bei jing : Qing hua ta xue chu ban she, 2013. - 330 p. : ill. ; 26 cm. Includes bibliographical references and index. ISBN: 9787302335405 Subjects--Topical Terms: Business--Methodology. LC Class. No.: HD30.4 / .S435Q