Gaya APA
Tathagati, A. (2014).
Step by step membuat SOP : standart operating procedure (Cet. 1).
Yogyakarta:
EfataPublishing.
Gaya MLA
Tathagati, Arini.
"Step by step membuat SOP : standart operating procedure".
Cet. 1
Yogyakarta:
EfataPublishing,
2014.
BUKU TEKS.