APA

Forsyth W., . (2000). Clockwise intermediate. Teacher's book. United States: Oxford University Press.

Chicago

Forsyth Will, . 2000. Clockwise intermediate. Teacher's book. United States: Oxford University Press.

Harvard

Forsyth W., . (2000). Clockwise intermediate. Teacher's book. United States: Oxford University Press.

MLA

Forsyth Will, . Clockwise intermediate. Teacher's book. United States: Oxford University Press. 2000.