Macaulay, D. (1975). Pyramid. Houghton Mifflin Company.
Lua i Stíl Chicago (17ú heag.)Macaulay, David. Pyramid. Boston: Houghton Mifflin Company, 1975.
Lua MLA (9ú heag.)Macaulay, David. Pyramid. Houghton Mifflin Company, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.