Bernardo, J. E., & Gaspar, M. A. B. (2016). Value-based pricing of three organic vegetables using Van Westendorp Price Sensitivity Meter (PSM).
Lua i Stíl Chicago (17ú heag.)Bernardo, Janice E., agus Marjorie Ann B. Gaspar. Value-based Pricing of Three Organic Vegetables Using Van Westendorp Price Sensitivity Meter (PSM). 2016.
Lua MLA (9ú heag.)Bernardo, Janice E., agus Marjorie Ann B. Gaspar. Value-based Pricing of Three Organic Vegetables Using Van Westendorp Price Sensitivity Meter (PSM). 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.