Hellyer, R., Robinson, C., & Sherwood, P. (1997). Study skills for learning power. Boston: Houghton Mifflin.
Čikaški stil citiranjaHellyer, Regina., Carol Robinson, i Phyllis Sherwood. Study Skills for Learning Power. Boston: Houghton Mifflin, 1997.
MLA način citiranjaHellyer, Regina., Carol Robinson, i Phyllis Sherwood. Study Skills for Learning Power. Boston: Houghton Mifflin, 1997.
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