APA (7th ed.) Citation

Tolkien Society (England). Nigglings Smial, Lewis, A., & Ritchie, L. (1993). Niggling special publication. Nigglings.

Chicago Style (17th ed.) Citation

Tolkien Society (England). Nigglings Smial, Alex Lewis, and Lyn Ritchie. Niggling Special Publication. England: Nigglings, 1993.

MLA (8th ed.) Citation

Tolkien Society (England). Nigglings Smial, et al. Niggling Special Publication. Nigglings, 1993.