Grammarly
Grammarly Handbook: Faulty Parallelism in Comparisons Using Than
This page focuses on correcting mistakes in parallel structure when using the word "than" in a comparison. It also covers how to correct the parallelism.
Capital Community College Foundation
Guide to Grammar and Writing: Parallel Form
This site from the Capital Community College defines the term and gives many examples of faulty parallelism and the corrected version of sentences. Includes links to a couple of quizzes at the bottom of the page. "Most of the...
Grammar Tips
Grammar Tips: Faulty Parallelism in Coordinate Elements: Short Version
This resource presents many examples of awkward and faulty parallelism which could be used for a class writing exercise, as well as for a guide to constructing correct sentences.