APA
Blackhurst E. A., . (1993). An introduction to special education 3rd ed. [Place of publication not identified]: HarperCollins Publishers.
Chicago
Blackhurst Edward A, . 1993. An introduction to special education 3rd ed. [Place of publication not identified]: HarperCollins Publishers.
Harvard
Blackhurst E. A., . (1993). An introduction to special education 3rd ed. [Place of publication not identified]: HarperCollins Publishers.
MLA
Blackhurst Edward A, . An introduction to special education 3rd ed. [Place of publication not identified]: HarperCollins Publishers. 1993.