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Author Biographies

R. Supriyanto, Gunadarma University

Gunadarma University, Jl. Margonda Raya No. 100 Pondokcina Depok

Fani Yayuk S, Gunadarma University

Gunadarma University, Jl. Margonda Raya No. 100 Pondokcina Depok

Febry Mandasari, Gunadarma University

Gunadarma University, Jl. Margonda Raya No. 100 Pondokcina Depok

Any K. Yapie, Gunadarma University

Gunadarma University, Jl. Margonda Raya No. 100 Pondokcina Depok