Olsen, D., & Richards, J. (1994). Inter-basin comparison study: Columbia River salmon production compared to other West Coast production areas : phase II analysis. Pacific Northwest Project?].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOlsen, Darryll, और Jack Richards. Inter-basin Comparison Study: Columbia River Salmon Production Compared to Other West Coast Production Areas : Phase II Analysis. [S.l.: Pacific Northwest Project?], 1994.
एमएलए (8वां संस्करण) प्रशस्ति पत्रOlsen, Darryll, और Jack Richards. Inter-basin Comparison Study: Columbia River Salmon Production Compared to Other West Coast Production Areas : Phase II Analysis. Pacific Northwest Project?], 1994.
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