APA Style

RIDWANSYAH, A. (2015). Mark Plus Selling Way : Formula Sukses Penjualan Ke Klien Korporat [Business-to-Business Selling] (ed. 1). Jakarta: Gramedia Pustaka Utama.

MLA Style

RIDWANSYAH, Ardhi. "Mark Plus Selling Way : Formula Sukses Penjualan Ke Klien Korporat [Business-to-Business Selling]". ed. 1 Jakarta: Gramedia Pustaka Utama, 2015. Text.