APA (7th ed.) Citation

Longfellow, H. W., Anthony, A. V. S., Homer, W., & Waud, A. R. (1878). Excelsior. J. R. Osgood.

Chicago Style (17th ed.) Citation

Longfellow, Henry Wadsworth, A. V. S. Anthony, Winslow Homer, and Alfred R. Waud. Excelsior. Boston: J. R. Osgood, 1878.

MLA (9th ed.) Citation

Longfellow, Henry Wadsworth, et al. Excelsior. J. R. Osgood, 1878.