10 Duets in the styles of Romantic, Blues, Bossa Nova, Samba, Pop, Folk. By Juergen Kumlehn. For Guitar (All). duets. AMA Verlag. All Styles. Level: Beginning-Intermediate. Book. Size 9x12. 88 pages. Published by AMA Verlag. 2 guitars

Compiled and edited by William Bay. For Guitar (Flatpicking). Solos and duets. All styles. Level: Intermediate-Advanced. Book. Size 8.75x11.75. 280 pages. Published by Mel Bay Publications, Inc.