توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Armah Frederick Ato, Yawson David Oscar, Akoto Bismark, Pappoe Alex Nii Moi, Obiri Samuel, & UCLA Department of Statistics. Mining and heavy metal Ppollution , assessment of aquatic environments in Tarkwa (Ghana) using multivariate statistical analysis.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Armah Frederick Ato, Yawson David Oscar, Akoto Bismark, Pappoe Alex Nii Moi, Obiri Samuel, و UCLA Department of Statistics. Mining and Heavy Metal Ppollution , Assessment of Aquatic Environments in Tarkwa (Ghana) Using Multivariate Statistical Analysis.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Armah Frederick Ato, et al. Mining and Heavy Metal Ppollution , Assessment of Aquatic Environments in Tarkwa (Ghana) Using Multivariate Statistical Analysis.