Gaya APA

Kerami, D., Silaban, D, R, . (2019). Riset operasional 1 (Ed.1 Cet.4). Tangerang Selatan: .

Gaya MLA

Kerami, Djati., Silaban, Denny, Riama, . "Riset operasional 1". Ed.1 Cet.4 Tangerang Selatan: , 2019. Text.