Gaya APA

Hedenquist, D, N, U, L, J, A. (1986). Communicative Ideas - An approach with classroom activities (1). London: Language Teaching Publications.

Gaya MLA

Hedenquist, David, Norman,, Ulf, Levihn,, Jan, Anders. "Communicative Ideas - An approach with classroom activities". 1 London: Language Teaching Publications, 1986. Buku Analog.