Gaya APA
Purba, Y, S., Suci, M.
(2024).
Speaking English in Professional Situations
.
Yogyakarta:
Terang Sejati.
Gaya MLA
Purba, Y., Sanaha., Suci, Maria.
"Speaking English in Professional Situations".
Yogyakarta:
Terang Sejati,
2024.
Text.