D.I. Edel'man. 1994. "Dardestān Ii. Language." In Encyclopedia Iranica, Online: http://www.iranicaonline.org/articles/dardestan-#i.

D., Edelman and Leila R. Dodykhudoeva. 2009. "Shughni." In The Iranian Languages, edited by Gernot Windfuhr. 787-824.

Elena Bashir. 2009. "Wakhi." In The Iranian Languages, edited by Gernot Windfuhr. Routledge.

Paul Ludwig. 2009. "Zazaki." In The Iranian Languages, edited by Gernot Windfuhr. 545-586. Routledge.

Charles M. Kieffer. 2009. "Parachi." In The Iranian Languages, edited by Gernot Windfuhr. 693-720. Routledge.

Parks, Elizabeth., Epley, Christina., et al (2011). A Sociolinguistic Profile of the Jamaican Deaf Community. SIL International. SIL Electronic Survey

David Mead. 2001. "A Preliminary Sketch of the Bobongko Language." In Studies in Sulawesi linguistics: Part VII, edited by In Wyn D. Laidig. 61-92. Universitas Katolik Indonesia Atma Jaya. Online: http://sealang.net/archives/nusa/pdf/nusa-v49-p61-94.pdf.

2009. "Perfil Sociodeomgráfico De La Población Que Habla Lengua Indígena." Instituto Nacional de Estadística y Geografía (INEGI). Online: http://www.inegi.org.mx/prod_serv/contenidos/espanol/bvinegi/productos/….

Georg Buddruss. 1979. "Grangali. Ein Nachtrag Zum Atlas Der Dardspachen." In Münchener Studien zur Sprachwissenschaft, 38: 21-39.

Juha Janhunen; Marja Peltomaa; Erika Sandman; Xiawu Dongzhou. 2008. "Wutun." LINCOM EUROPA.