The Encyclopædia Britannica;
a dictionary of arts, sciences, and general literature. Original 9th ed. in 25 vols.
edited by Spencer Baynes and W. Robertson Smith. New Werner ed. in 30 vols. with New American supplement.

APA Citation

Smith, W. Robertson (William Robertson)., Baynes, T. Spencer (Thomas Spencer)., Kellogg, D. O. (Day Otis). (190318931901). The Encyclopædia Britannica: a dictionary of arts, sciences, and general literature. Original 9th ed. in 25 vols. 20th cent. ed., rev. New York: Werner.

MLA Citation

Smith, W. Robertson (William Robertson), 1846-1894, T. Spencer (Thomas Spencer) Baynes, and D. O. (Day Otis) Kellogg. The Encyclopædia Britannica: a Dictionary of Arts, Sciences, And General Literature. Original 9th Ed. In 25 Vols. 20th cent. ed., rev. New York: Werner, 190318931901.