Sawyer. A Hundred Years of Texas Waterfowl Hunting. Texas A&M University Press.
Čikaški stil citiranja (17. izdanje)Sawyer. A Hundred Years of Texas Waterfowl Hunting. Texas A&M University Press.
MLA način citiranja (9. izdanje)Sawyer. A Hundred Years of Texas Waterfowl Hunting. Texas A&M University Press.
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