World Health Organization. (1998). Concise International chemical assessment Document; Limonene. IOMS.
Lua i Stíl Chicago (17ú heag.)World Health Organization. Concise International Chemical Assessment Document; Limonene. Ginebra: IOMS, 1998.
Lua MLA (9ú heag.)World Health Organization. Concise International Chemical Assessment Document; Limonene. IOMS, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.