Educational Research Council of America. (1968). GCRP language and literature program (Student workbook.). Educational Research Council of America.
Chicago-Zitierstil (17. Ausg.)Educational Research Council of America. GCRP Language and Literature Program. Student workbook. [Cleveland, Ohio]: Educational Research Council of America, 1968.
MLA-Zitierstil (8. Ausg.)Educational Research Council of America. GCRP Language and Literature Program. Student workbook. Educational Research Council of America, 1968.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.