bullet
Communications Skills by Sitima, et al. (CC BY-NC-SA)
bullet
bullet
Communications by Boundless (CC BY-SA)
bullet
Deutsch im Blick  by University of Texas (CC BY-NC-ND) Ancillaries
bullet
Francais Interactif by University of Texas (CC BY)
bullet
Hearing by OpenLearn (CC BY-NC-SA)
bullet
How to Communicate as a Health Volunteer by The Cain Project in Engineering and Professional Communication (CC BY)
bullet
bullet
Mezhdu Nami by Comer, deBenedette, Perkins, and Smyslova (CC BY-NC-ND) Ancillaries
bullet
Ovid, “Metamorphoses”, 3.511-733  by Gildenhard and Zissos (CC BY)
bullet
bullet
Spanish  by Wikibooks (CC BY-SA)
bullet
Spanish I by Wikiversity (CC BY-SA) [Review]
bullet
Spanish II by Wikiversity (CC BY-SA)
bullet
Stand up, Speak out: The Practice and Ethics of Public Speaking by University of Minnesota Libraries Publishing (CC BY-NC-SA)

Disclaimer
College Open Textbooks does not vet textbooks for quality or accuracy of the content. Peer reviews of selected textbooks may be found through the [Reviews] link.

License Attributes
CC: Creative Commons license.
    BY: Attribution to original author required.
    NC: Content is restricted to non-commercial use.
    ND: Users may not derive or modify the content.
    SA: Content may be shared and re-used only under the original license terms.
Custom License: The author(s) have created their own open license. Follow the link in the listing for details.
EMUCL: Educational Material Universal Common License.
GFDL: GNU Free Documentation License.
GGPL: GNU General Public License.
OPL: Open Public License
PD: Public Domain – Content is free of any know copyright restrictions.