APA
Gruber G. R., . (1971). Reading interpretation in social studies, natural sciences and literature. New York: Simon & Schuster.
Chicago
Gruber Gary R, . 1971. Reading interpretation in social studies, natural sciences and literature. New York: Simon & Schuster.
Harvard
Gruber G. R., . (1971). Reading interpretation in social studies, natural sciences and literature. New York: Simon & Schuster.
MLA
Gruber Gary R, . Reading interpretation in social studies, natural sciences and literature. New York: Simon & Schuster. 1971.