APA (7th ed.) Citation

Musselman, D. L., & Gill, J. E. (1907). A business speller: Containing a comprehensive and important list of current words, with their pronunciations and definitions; also carefully selected geographical and Christian names, etc.. Arragned for use in business colleges, academies, advanced grades of common schools, etc. D.L. Musselman Publishing Co..

Chicago Style (17th ed.) Citation

Musselman, D. L., and John E. Gill. A Business Speller: Containing a Comprehensive and Important List of Current Words, with Their Pronunciations and Definitions; Also Carefully Selected Geographical and Christian Names, Etc.. Arragned for Use in Business Colleges, Academies, Advanced Grades of Common Schools, Etc. Quincy, Ill.: D.L. Musselman Publishing Co., 1907.

MLA (8th ed.) Citation

Musselman, D. L., and John E. Gill. A Business Speller: Containing a Comprehensive and Important List of Current Words, with Their Pronunciations and Definitions; Also Carefully Selected Geographical and Christian Names, Etc.. Arragned for Use in Business Colleges, Academies, Advanced Grades of Common Schools, Etc. D.L. Musselman Publishing Co., 1907.

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