Writerpreneur: A Swain Study Collection Volume 1Dwight V. Swain, Dr. Robert C. Worstell E-bok2024104 kr
Breakthrough Copywriter 2.0: An Advertising Field Guide to Eugene M. Schwartz' ClassicDr. Robert C. Worstell E-bok201882 kr
Writerpreneur: Direct Sales HandbookElmer Wheeler, Edward Berman, Orison Swett Marden, Dr. Robert C. Worstell E-bok2026128 kr