The following nGram suggests that dos and donts, do's and don'ts, and do's and don't's are all used, but it appears that do's and don'ts takes the cake. A quick search suggested that capitalizing all but the s is also fairly popular:
I want to write "dos and don'ts", or an equivalent expression, in a university essay. I am assuming that it is not very academic to write "dos and don'ts", so does anyone have a better way of putti...
phrase requests - Formal alternative for "dos and don'ts" - English ...
The other quotations use these spellings: Fair do's, fair do's, fair dos, Fair do, fair do's. The first of these is from 1941: 1941 L. A. G. Strong Bay 168 Come on, Doctor. Fair do's. The spellings are usually a variation of the noun do (under which the phrase is listed in the OED), because a do is something done, a dealing or treatment.
Beer forms part of the culture of many nations and is associated with social traditions such as beer festivals, as well as activities like pub games. Beer can cause health issues if consumed often or in excess; alcohol is an IARC group 1 carcinogen.
After researching and taste-testing many of America's most popular beers, we present this ranking that offers something for every palate and budget.
Beer is an alcoholic beverage produced by extracting raw materials with water, boiling (usually with hops), and fermenting. In some countries beer is defined by law—as in Germany. Brewing in the 21st century is a large-scale industry. Learn about the history, types, and brewing process of beer.