Lua APA (7ú heag.)

SORREL,C.A. (1973). ROCKS AND MINERALS. GOLDEN PRESS.

Lua i Stíl Chicago (17ú heag.)

SORREL,C.A. ROCKS AND MINERALS. RACINE: GOLDEN PRESS, 1973.

Lua MLA (9ú heag.)

SORREL,C.A. ROCKS AND MINERALS. GOLDEN PRESS, 1973.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.