APA (7e ed.) Bronvermelding

Sherwin, J. S. (1969). Four problems in teaching English: A critique of research. National Council of Teachers of English by International Textbook.

Chicago (17e ed.) Bronvermelding

Sherwin, J. Stephen. Four Problems in Teaching English: A Critique of Research. Scranton, Pa: National Council of Teachers of English by International Textbook, 1969.

MLA (9e ed.) Bronvermelding

Sherwin, J. Stephen. Four Problems in Teaching English: A Critique of Research. National Council of Teachers of English by International Textbook, 1969.