(1970). Vol. 62, № 11; Industrial and Engineering Chemistry; Fundamentals. 1970.
Lua i Stíl Chicago (17ú heag.)Vol. 62, № 11; Industrial and Engineering Chemistry; Fundamentals. 1970, 1970.
Lua MLA (9ú heag.)Vol. 62, № 11; Industrial and Engineering Chemistry; Fundamentals. 1970, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.