APA

SLACK b., . (1993). visitors uk an a to z user manual to the uk. london: impact books.

Chicago

SLACK brian, . 1993. visitors uk an a to z user manual to the uk. london: impact books.

Harvard

SLACK b., . (1993). visitors uk an a to z user manual to the uk. london: impact books.

MLA

SLACK brian, . visitors uk an a to z user manual to the uk. london: impact books. 1993.