Brown, W. R. (1977). Earth science: A search for understanding: teacher's annotated edition. J.B. Lippincott.
Čikaški stil citiranja (17. izdanje)Brown, Walter R. Earth Science: A Search for Understanding: Teacher's Annotated Edition. J.B. Lippincott, 1977.
MLA način citiranja (9. izdanje)Brown, Walter R. Earth Science: A Search for Understanding: Teacher's Annotated Edition. J.B. Lippincott, 1977.
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