If you quote unique language from a sign, create a works-cited-list entry for it.
A sign advises you to “shout, wave arms, throw stones” if you encounter a bear in the park (“Bear Country”).
For the entry, follow the MLA template of core elements. The entry below includes a description in place of the title, the publisher of the sign, and the location where the sign was viewed. Since no date appears on the sign, the date the sign was viewed appears in the optional-element slot at the end of the entry:
“Bear Country” sign. National Park Service, Yosemite National Park. Viewed 11 June 2016.
Published 21 November 2017