Become a certified professional trainer : surefire strategies to: pass the major certification exams, build a strong client list, start making money /

• 作者：Robert Wolff.
• 出版者：McGraw-Hill
• 出版地：New York :
• 語文：英語
• ISBN/ISSN/ISRC：9780071635875 (pbk.) ; 0071635874 (pbk.) :
• 作者：Wolff, Robert,
• 索書號：613.7