english.stackexchange.com/questions/121054/which-one-is-correct-et-al-s-or-et-al

The grammatically correct way is "Einstein et al.'s paper", because to indicate possession by a noun phrase in English, the 's should be applied ...

blog.apastyle.org/apastyle/2011/02/et-al-when-and-how.html

Feb 4, 2011 ... I have italicized et al. in this post because it's a linguistic example (see .... When should you use author et al. versus author and colleagues.

www.e-education.psu.edu/styleforstudents/c3_p28.html

It is important to use these abbreviations literally and to punctuate them correctly. Many writers confuse "e.g." and "i.e.," and many type "et al." improperly or do ...

www.editage.com/insights/using-et-al-for-in-text-citations-in-research-papers

Jan 16, 2014 ... Most journals recommend the use of et al. in research papers. This post provides guidelines on how to use 'et al.' in in reference correctly.

grammarist.com/usage/et-al

Jun 21, 2011 ... Et al.is an abbreviation of the Latin loanphrase et alii, meaning and others. It is similar to etc. (short for et cetera, meaning and the rest), but ...

evanced.nileslibrary.org/research/Newspapers/NilesHerald-Spectator/2012/01_12_2012.pdf

Jan 12, 2012 ... Seay to Alexander Forowycz Al- exandra D Baranyk .... wired or wireless A/V components, video walls, computer networks, central vacuum systems ...... could go on Medicare on Dec. 1. ...... a la "E.T.," with hard-hitting anti-war ...