Lua APA (7ú heag.)
Cronkite, D. [. (2007). Prentice Hall Science Explorer: Oklahoma Grade 6. Pearson Prentice Hall.
Lua i Stíl Chicago (17ú heag.)
Cronkite, Donald [et-al]. Prentice Hall Science Explorer: Oklahoma Grade 6. Massachusetts: Pearson Prentice Hall, 2007.
Lua MLA (9ú heag.)
Cronkite, Donald [et-al]. Prentice Hall Science Explorer: Oklahoma Grade 6. Pearson Prentice Hall, 2007.
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