APA-ийн эшлэл(7 дахь хэвлэлт)

Warshawsky, D. (1994). Spectrum 4: A communicative course in English. Workbook. Prentice Hall Regents.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Warshawsky, Diane. Spectrum 4: A Communicative Course in English. Workbook. London: Prentice Hall Regents, 1994.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Warshawsky, Diane. Spectrum 4: A Communicative Course in English. Workbook. Prentice Hall Regents, 1994.