Leaver, Betty Lou
Achieving success in second language acquisition
Cambridge Press , 2005
 Buku Teks SO
Applied sport psychology : personal growth to peak performance
Jean M. Williams, editor
Mayfield Pub. Co, 2001
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Applied sport psychology : personal growth to peak performance
edited by Jean M. Williams, Vikki Krane
McGraw-Hill, 2015
 Buku Teks
Pinkerton, William J.
Project management: achieving project bottom-line success
McGraw-Hill , 2003
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Tracy, Brian
TurboCoach: a powerful system for achieving breakthrough career success
American Management Association, 2005
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