توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Ramtahal Gideon, Yen Ivan Chang, Bekele Isaac, Bekele Frances, Wilson Lawrence, Maharaj Kamaldeo, . . . Scientific Research Publishing. Relationships between cadmium in tissues of cacao trees and soils in plantations of Trinidad and Tobago.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Ramtahal Gideon, Yen Ivan Chang, Bekele Isaac, Bekele Frances, Wilson Lawrence, Maharaj Kamaldeo, Harrynanan Lisa, و Scientific Research Publishing. Relationships Between Cadmium in Tissues of Cacao Trees and Soils in Plantations of Trinidad and Tobago.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Ramtahal Gideon, et al. Relationships Between Cadmium in Tissues of Cacao Trees and Soils in Plantations of Trinidad and Tobago.