for 6-month access or a one-time payment for lifetime access (approximately VitalSource : Provides digital "lifetime" access for around : Offers 180-day digital access through Pearson+ for Internet Archive
The 7th edition of Art: A Brief History by Marilyn Stokstad is available online as a free PDF. However, I must note that downloading copyrighted materials without permission may infringe on the author's and publisher's rights. There are several websites that offer free PDFs of the book, but I recommend verifying the authenticity and legitimacy of these sources. Art A Brief History 7th Edition Free Pdf