APA-čujuhus (7. p.)
Keller, M. (2010). Portfolios 01: An essential primer for today's competitive market. Rockport Publishers.
Chicago-čujuhus (17. p.)
Keller, Maura. Portfolios 01: An Essential Primer for Today's Competitive Market. Beverly, Mass.: Rockport Publishers, 2010.
MLA-čujuhus (9. p.)
Keller, Maura. Portfolios 01: An Essential Primer for Today's Competitive Market. Rockport Publishers, 2010.
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