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by Hinkle, Janice L; Cheever, Kerry H.; Overbaugh, Kristen
by Ackley, Betty J; Ladwig, Gail B; Flynn Makic, Mary Beth; et al.
by McGonigle, Dee; Mastrian, Kathleen
by OpenStax
by Guffey; Loewy
by Eric Foner
by Mays, Kelly J.
by Rogers, Julia
by Ehrlich, Ann; Schroeder, Carol; Ehrlich, Laura; et al.
by Arnold, Bill T.; Beyer, Bryan E.