APA (7th ed.) Citation

Perraton, H. (1973). The techniques of writing correspondence courses. International Extension College.

Chicago Style (17th ed.) Citation

Perraton, Hilary. The Techniques of Writing Correspondence Courses. Cambridge: International Extension College, 1973.

MLA (9th ed.) Citation

Perraton, Hilary. The Techniques of Writing Correspondence Courses. International Extension College, 1973.