Стиль цитування APA (7-ме видання)

Comfort, J. (1984). Speaking effectively: Developing speaking skills for business English. Cambridge University Press.

Чикаго стиль цитування (17-те видання)

Comfort, Jeremy. Speaking Effectively: Developing Speaking Skills for Business English. Cambridge: Cambridge University Press, 1984.

Стиль цитування MLA (8-ме видання)

Comfort, Jeremy. Speaking Effectively: Developing Speaking Skills for Business English. Cambridge University Press, 1984.