Chacko, V. (1965). Manual on sampling techniques for forest surveys. The Manager of Publications.
Lua i Stíl Chicago (17ú heag.)Chacko, V.J. Manual on Sampling Techniques for Forest Surveys. Delhi: The Manager of Publications, 1965.
Lua MLA (9ú heag.)Chacko, V.J. Manual on Sampling Techniques for Forest Surveys. The Manager of Publications, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.