Horwood, A. R. (1924). Leaves from a naturalist's diary: With notes on what to look for month by month. G.G. Harrap.
Lua i Stíl Chicago (17ú heag.)Horwood, Arthur Reginald. Leaves from a Naturalist's Diary: With Notes on What to Look for Month by Month. London: G.G. Harrap, 1924.
Lua MLA (8ú heag.)Horwood, Arthur Reginald. Leaves from a Naturalist's Diary: With Notes on What to Look for Month by Month. G.G. Harrap, 1924.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.