Tyler-Whittle, M. S. (1970). The plant hunters: Being an examination of collecting with an account of the careers and the methods of a number of those who have searched the world for wild plants. Chilton.
Lua i Stíl Chicago (17ú heag.)Tyler-Whittle, Michael Sidney. The Plant Hunters: Being an Examination of Collecting with an Account of the Careers and the Methods of a Number of Those Who Have Searched the World for Wild Plants. Philadelphia: Chilton, 1970.
Lua MLA (9ú heag.)Tyler-Whittle, Michael Sidney. The Plant Hunters: Being an Examination of Collecting with an Account of the Careers and the Methods of a Number of Those Who Have Searched the World for Wild Plants. Chilton, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.