APA

Abrams S., Wales H. G., . (1977). Special English for Business. New York: Collier Macmmillan.

Chicago

Abrams Sharon, Wales Hugh G, . 1977. Special English for Business. New York: Collier Macmmillan.

Harvard

Abrams S., Wales H. G., . (1977). Special English for Business. New York: Collier Macmmillan.

MLA

Abrams Sharon, Wales Hugh G, . Special English for Business. New York: Collier Macmmillan. 1977.