Gaya APA

Walter, M, S, A, C. (1990). The New Cambridge English Course Student 1B (1). New York: University Of Cambridge Local Exami Nations Syndiante.

Gaya MLA

Walter, Michael, Swan, And, Catherine. "The New Cambridge English Course Student 1B". 1 New York: University Of Cambridge Local Exami Nations Syndiante, 1990. Text.