For MHRA you would include up to three authors in your footnote and final bibliography – bibliographic reference example:

Oswald, Andrew J, Eugenio Proto, and Daniel Sgroi, ‘Happiness and Productivity’, Journal of Labor Economics, 33.4 (2015), 789-822 [accessed 4 August 2021]

If your reference has four or more authors, you can then add ‘and others’ in your footnote and final bibliography – bibliographic reference example:

Hobbs, Sue, and others, Academic Skills: Listening, Speaking, and Study Skills (Oxford: Oxford University Press, 2011)