Harris, D. P. (1966). Reading improvement exercises for students of English as a second language. Prentice-Hall.
Chicago-referens (17:e uppl.)Harris, David Payne. Reading Improvement Exercises for Students of English as a Second Language. Englewood Cliffs, N. J: Prentice-Hall, 1966.
MLA-referens (9:e uppl.)Harris, David Payne. Reading Improvement Exercises for Students of English as a Second Language. Prentice-Hall, 1966.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.