Стиль цитування APA (7-ме видання)

Doff, A., & Jones, C. (1997). Language in use: Upper-intermediate : self-study workbook with answer key (1st print.). Cambridge University Press.

Чикаго стиль цитування (17-те видання)

Doff, Adrian, та Christopher Jones. Language in Use: Upper-intermediate : Self-study Workbook with Answer Key. 1st print. Cambridge: Cambridge University Press, 1997.

Стиль цитування MLA (8-ме видання)

Doff, Adrian, та Christopher Jones. Language in Use: Upper-intermediate : Self-study Workbook with Answer Key. 1st print. Cambridge University Press, 1997.