APA
Cohen L., . (1976). Educational Research in Classrooms and Schools : a manual of materials and methods. Harper &Row, London: .
Chicago
Cohen Louis, . 1976. Educational Research in Classrooms and Schools : a manual of materials and methods. Harper &Row, London: .
Harvard
Cohen L., . (1976). Educational Research in Classrooms and Schools : a manual of materials and methods. Harper &Row, London: .
MLA
Cohen Louis, . Educational Research in Classrooms and Schools : a manual of materials and methods. Harper &Row, London: . 1976.