Gray, F. (1928). My two African journeys. Methuen.
Lua i Stíl Chicago (17ú heag.)Gray, Frank. My Two African Journeys. London: Methuen, 1928.
Lua MLA (8ú heag.)Gray, Frank. My Two African Journeys. Methuen, 1928.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.