Nilsen, D. L., & Nilsen, A. P. (1975). Semantic theory: A linguistic perspective. Newbury House Publishers.
Lua i Stíl Chicago (17ú heag.)Nilsen, Don L., agus Alleen Pace Nilsen. Semantic Theory: A Linguistic Perspective. Rowley, Mass: Newbury House Publishers, 1975.
Lua MLA (9ú heag.)Nilsen, Don L., agus Alleen Pace Nilsen. Semantic Theory: A Linguistic Perspective. Newbury House Publishers, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.