Life is so inconveniently complex nowadays, what with income taxes and other visitations of government, that it is hard for us to have the added risk of wraiths, but there's no escaping. Many persons of to-day are in the same mental state as one Mr. Boggs, told of in a magazine story, a rural gentleman who was agitated over spectral visitants. He had once talked at a séance with a speaker who claimed to be the spirit of his brother, Wesley Boggs, but who conversed only on blue suspenders, a subject not of vital interest to Wesley in the flesh. "Still," Mr. Boggs reflected, "I'm not so darn sure!" In answer to a suggestion regarding subliminal consciousness and dual personality as explanation of the strange things that come bolting into life, he said, "It's crawly any way you look at it. Ghosts inside you are as bad as ghosts outside you." There are others to-day who are "not so darn sure!"...
The authors are more than three in number but with no maximum limit. In such case MLA style uses et al.. It is also possible employ the acronym AA.VV. or Aa.Vv. which stands for Latin Auctores Varii.