Gaya APA

Josua, T., Sany, A. (2010). The ExcelCounting (Ed.1, Cet.1). Yogyakarta: Graha Ilmu.

Gaya MLA

Tarigan, Josua., Ang, Sany. "The ExcelCounting". Ed.1, Cet.1 Yogyakarta: Graha Ilmu, 2010. Textbook.