Ayer, F. C. (1945). A study of high school spelling vocablary, including 15, 542 words alphabetically arranged with comparative data from the Thorndike, Horn and Betts word lists. The Steck company.
Chicago-viite (17. p.)Ayer, Fred Carleton. A Study of High School Spelling Vocablary, Including 15, 542 Words Alphabetically Arranged with Comparative Data from the Thorndike, Horn and Betts Word Lists. Austin, Tex: The Steck company, 1945.
MLA-viite (9. p.)Ayer, Fred Carleton. A Study of High School Spelling Vocablary, Including 15, 542 Words Alphabetically Arranged with Comparative Data from the Thorndike, Horn and Betts Word Lists. The Steck company, 1945.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.