Não informado. (1931). Minnesota Horticulturist. Minnesota State Horticultural Society.
Lua i Stíl Chicago (17ú heag.)Não informado. Minnesota Horticulturist. Minneapolis, Minn: Minnesota State Horticultural Society, 1931.
Lua MLA (8ú heag.)Não informado. Minnesota Horticulturist. Minnesota State Horticultural Society, 1931.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.