Gaya APA

Slater, J, C, S. (1991). Speaking 2 : student's book . Yogyakarta: Kanisius (anggota IKAPI).

Gaya MLA

Slater, Joanne, Collie,, Stephen. "Speaking 2 : student's book". Yogyakarta: Kanisius (anggota IKAPI), 1991. Text.