2004, Christopher Hart, Manhwa Mania: How to Draw Korean Comics, Watson-Guptill Publications (2004), →ISBN, page 7:
In fact, many manga fans don't realize that their favorite comics — such as Priest, Ragnarock, and Island — are actually Korean manhwa!
2007, Jason Thompson, Manga: The Complete Guide, Del Rey (2007), →ISBN, unnumbered page:
Since the Korean language reads left to right (unlike Chinese and Japanese), manhwa are printed left to right in the same format as English books.
2008, Mark James Russell, Pop Goes Korea: Behind the Revolution in Movies, Music, and Internet Culture, Stone Bridge Press (2008), →ISBN, unnumbered page:
As the best Japanese titles were mined, the American companies began to look for alternatives, and Tokyopop's founder Stuart Levy already had a budding interest in Korean manhwa.
There is a virtual flood of manhwa varieties that cover not only academic subjects such as literature, history, and science, but also everything from Korean and foreign legends and myths to daily-life skills.