Gaya APA
Joseph, M, B. (2020).
Gammu and kalkun for information services and sales based on information technology (IJECE .
Semarang:
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Gaya MLA
Joseph, Mars,, Budi.
"Gammu and kalkun for information services and sales based on information technology (IJECE".
Semarang:
,
2020.
Text.