The Modern Language Association adopted the above guidelines. Other organizations have since adapted these guidelines for their own use. For more information see https://www.mla.org/About-Us/Governance/Committees/Committee-Listings/Professional-Issues/Committee-on-Information-Technology/Guidelines-for-Evaluating-Work-in-Digital-Humanities-and-Digital-Media
Another resource is the Short Guide to Evaluation of Digital Work.
In Explaining Digital Humanities in Promotion Documents, Katherine Harris explains how she documented her work.
Altmetrics for Researchers gives examples of using altmetrics in your promotion and tenure documents. Scroll down to Using altmetrics in your own promotion & tenure dossier.
Day, M., Delagrange, S. H., Palmquist, M., Pemberton, M. A., & Walker, J. R. (2013). What we really value: Redefining scholarly engagement in tenure and promotion protocols. College Composition and Communication, 65(1), 185-208. p.191
Odell, J., Coates, H., & Palmer, K. (2016). Rewarding open access scholarship in promotion and tenure: Driving institutional change. College & Research Libraries News, 77(7), 322–325.
Mandell, L. (2012). Promotion and Tenure for Digital Scholarship. Journal Of Digital Humanities, 1(4). http://library.valdosta.edu:2048/login?url=http://search.ebscohost.com/login.aspx?direct=true&db=mzh&AN=2014401652&site=eds-live&scope=site
Rockwell, G. (2011). On the Evaluation of Digital Media as Scholarship. Profession, 152-168. doi:10.1632/prof.2011.2011.1.152. http://www.mlajournals.org/doi/pdf/10.1632/prof.2011.2011.1.152