Barrett, J. (1998). Career, aptitude & selection tests: Match your IQ, personality & abilities to your ideal career : intermediate level. Kogan Page.
Lua i Stíl Chicago (17ú heag.)Barrett, Jim. Career, Aptitude & Selection Tests: Match Your IQ, Personality & Abilities to Your Ideal Career : Intermediate Level. London ; Philadelphia: Kogan Page, 1998.
Lua MLA (8ú heag.)Barrett, Jim. Career, Aptitude & Selection Tests: Match Your IQ, Personality & Abilities to Your Ideal Career : Intermediate Level. Kogan Page, 1998.
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