Pilo, T. (1976). Coffee production and marketing: Part II. Special Studies Division, Dept. of Agriculture.
Lua i Stíl Chicago (17ú heag.)Pilo, T.C. Coffee Production and Marketing: Part II. Quezon City: Special Studies Division, Dept. of Agriculture, 1976.
Lua MLA (9ú heag.)Pilo, T.C. Coffee Production and Marketing: Part II. Special Studies Division, Dept. of Agriculture, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.