Gray, W. S. (1969). The Teaching of reading and writing: Enlarged ed. with a supplementary chapter by Ralph Staiger. Unesco.
Chicago-Zitierstil (17. Ausg.)Gray, William S. The Teaching of Reading and Writing: Enlarged Ed. with a Supplementary Chapter by Ralph Staiger. Paris: Unesco, 1969.
MLA-Zitierstil (9. Ausg.)Gray, William S. The Teaching of Reading and Writing: Enlarged Ed. with a Supplementary Chapter by Ralph Staiger. Unesco, 1969.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.