Gaya APA

Campbell, N, A., Reece, J, B. (1967). The Roberts English Series a Linguistics Program D . Sacramento: Harcourt Brace Jovanovich.

Gaya MLA

Campbell, Neil, A., Reece, Jane, B.. "The Roberts English Series a Linguistics Program D". Sacramento: Harcourt Brace Jovanovich, 1967. Text.