Putra, A., Wisha, U. J., & Kusumah, G. (2017). Spatial Analysis of the River Line and Land Cover Changes in the Kampar River Estuary: The Influence of the Bono Tidal Bore Phenomenon. Universitas Muhammadiyah Surakarta.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Putra, Aprizon, Ulung Jantama Wisha, و Gunardi Kusumah. Spatial Analysis of the River Line and Land Cover Changes in the Kampar River Estuary: The Influence of the Bono Tidal Bore Phenomenon. Universitas Muhammadiyah Surakarta, 2017.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Putra, Aprizon, et al. Spatial Analysis of the River Line and Land Cover Changes in the Kampar River Estuary: The Influence of the Bono Tidal Bore Phenomenon. Universitas Muhammadiyah Surakarta, 2017.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.