APA Style
Spectrum Workbook. (1997).
Indonesia:
Elex Media Komputindo.
Chicago Style
Spectrum Workbook.
1st edition.
Indonesia:
Elex Media Komputindo,
1997.
Text.
MLA Style
Spectrum Workbook.
1st edition.
Indonesia:
Elex Media Komputindo,
1997.
Text.
Turabian Style
Spectrum Workbook.
Indonesia:
Elex Media Komputindo,
1997.
Print.