Simple, Compound, Complex, and Compound-Complex Sentences: English Sentence Forms
2013
Dictionary of English Synonyms: Vocabulary Building
2014
Dictionary of Approving and Disapproving Words: Vocabulary Building
2021
Transitive and Intransitive Verbs: English Verb Types
2021
Dictionary of 9-Letter Words: Words You Should Know
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Dictionary of 11-Letter Words: Words You Should Know
2021