Gaya APA

Noviyanti, ., Purnamasari, E, P. (2015). Panduan Menyusun Sop (standard Operating Procedure) . Yogyakarta: Kobis.

Gaya MLA

Noviyanti, ., Purnamasari, Evita, P.. "Panduan Menyusun Sop (standard Operating Procedure)". Yogyakarta: Kobis, 2015. Text.