Gaya APA

Swanson, C, P. (1967). Stress and intonation part 1 drills and exercises in english pronunciation . London: London: Collier-Macmillan; 1967.

Gaya MLA

Swanson, Carl, P.. "Stress and intonation part 1 drills and exercises in english pronunciation". London: London: Collier-Macmillan; 1967, 1967. Text.