APA (7th ed.) Citation

British Library, Nowell, L., Malone, K., & Christopher, S. (1963). The Nowell codex: British Museum Cotton Vitellius A. XV, second ms. Rosenkilde and Bagger.

Chicago Style (17th ed.) Citation

British Library, Laurence Nowell, Kemp Malone, and Saint Christopher. The Nowell Codex: British Museum Cotton Vitellius A. XV, Second Ms. Copenhagen: Rosenkilde and Bagger, 1963.

MLA (9th ed.) Citation

British Library, et al. The Nowell Codex: British Museum Cotton Vitellius A. XV, Second Ms. Rosenkilde and Bagger, 1963.