Kottmeyer, W. (1988). Basic goals in spelling. Webster Division, McGraw Hill.
Chicago Style aipamenaKottmeyer, William. Basic Goals in Spelling. New York: Webster Division, McGraw Hill, 1988.
MLA aipamenaKottmeyer, William. Basic Goals in Spelling. Webster Division, McGraw Hill, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.