Notes
- Ortlieb, Ortlieb & Verlaan,
- Turley, R.M., 2000
- Pennsylvania Department of Education
- Goldthwaite
- Graham, Harris & Mason, 2004
- Zinsser, W., 2016
- Turley, R.M., 2000
- Turley, R.M., 2000
- Goldthwaite
- Zinsser, W., 2016
- National Writing Project
- Bourque, P., 2015
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