BEATRICE MBAKAYA; D. KAMBEWA; ISAAC MAMBO. Assessing Adoption of Gross Margin Analysis Technique by Farmer Business School Lead Farmers in Mzuzu and Karonga Agriculture Development Divisions of Malawi . Journal of Agricultural Extension Management, India, v. 18, n. 1, 2017. Disponível em: https://epubs.icar.org.in/index.php/JAEM/article/view/171960. Acesso em: 21 oct. 2025.