Dyfyniad APA

ebrary, Inc, Adair, B., Filene, B., & Koloski, L. (2011). Letting go?: Sharing historical authority in a user-generated world (1st American ed.). Pew Center for Arts & Heritage.

Dyfyniad Arddull Chicago

ebrary, Inc, Bill Adair, Benjamin Filene, and Laura Koloski. Letting Go?: Sharing Historical Authority in a User-generated World. 1st American ed. Philadelphia, Pa.: Pew Center for Arts & Heritage, 2011.

Dyfyniad MLA

ebrary, Inc, et al. Letting Go?: Sharing Historical Authority in a User-generated World. 1st American ed. Pew Center for Arts & Heritage, 2011.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.