Nehring, R. (1978). Giant oil fields and world oil resources. Rand.
Lua i Stíl Chicago (17ú heag.)Nehring, Richard. Giant Oil Fields and World Oil Resources. Santa Monica, Calif: Rand, 1978.
Lua MLA (9ú heag.)Nehring, Richard. Giant Oil Fields and World Oil Resources. Rand, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.