APA (7th ed.) Citation

Crowther, M. O. How to Write Letters (Formerly The Book of Letters) A Complete Guide to Correct Business and Personal Correspondence.

Chicago Style (17th ed.) Citation

Crowther, Mary Owens. How to Write Letters (Formerly The Book of Letters) A Complete Guide to Correct Business and Personal Correspondence.

MLA (9th ed.) Citation

Crowther, Mary Owens. How to Write Letters (Formerly The Book of Letters) A Complete Guide to Correct Business and Personal Correspondence.

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