Yeung, R. Personality: How to Unleash Your Hidden Strengths (1.). Pearson Education UK.
Lua i Stíl Chicago (17ú heag.)Yeung, Rob. Personality: How to Unleash Your Hidden Strengths. 1. Pearson Education UK.
Lua MLA (8ú heag.)Yeung, Rob. Personality: How to Unleash Your Hidden Strengths. 1. Pearson Education UK.
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