APA (7th ed.) Citation

McGuffey, W. H. (2005). McGuffey's Eclectic Spelling Book. Project Gutenberg.

Chicago Style (17th ed.) Citation

McGuffey, William Holmes. McGuffey's Eclectic Spelling Book. Project Gutenberg, 2005.

MLA (9th ed.) Citation

McGuffey, William Holmes. McGuffey's Eclectic Spelling Book. Project Gutenberg, 2005.

Warning: These citations may not always be 100% accurate.