Gaya APA
Tathagati, A., Zaki, . (2013).
Step by Step Membuat SOP (Standard Operating Procedure) (Cetakan III, 2018).
Yogyakarta:
Efata Publishing.
Gaya MLA
Tathagati, Arini., Zaki, .
"Step by Step Membuat SOP (Standard Operating Procedure)".
Cetakan III, 2018
Yogyakarta:
Efata Publishing,
2013.
Text.