Dougherty, M. M. (1967). Instant spelling dictionary: 25,000 words spelled, divided, accented, including complete rules for spelling, word division, punctuation, capitalization, abbreviating, word compounding, forms of address, and proofreader's marks (New Third edition.). Career Institute.

Dougherty, Margaret M. Instant Spelling Dictionary: 25,000 Words Spelled, Divided, Accented, Including Complete Rules for Spelling, Word Division, Punctuation, Capitalization, Abbreviating, Word Compounding, Forms of Address, and Proofreader's Marks. New Third edition. New Jersey: Career Institute, 1967.

Dougherty, Margaret M. Instant Spelling Dictionary: 25,000 Words Spelled, Divided, Accented, Including Complete Rules for Spelling, Word Division, Punctuation, Capitalization, Abbreviating, Word Compounding, Forms of Address, and Proofreader's Marks. New Third edition. Career Institute, 1967.