United States of American. (2002). Open Court Reading - Challenge Workbook - Grade 6. NewYork: Mc Graw-Hill.
Chicago-стиль цитированияUnited States of American. Open Court Reading - Challenge Workbook - Grade 6. NewYork: Mc Graw-Hill, 2002.
MLA-цитированиеUnited States of American. Open Court Reading - Challenge Workbook - Grade 6. NewYork: Mc Graw-Hill, 2002.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.