APA aipamena

JOHNSTON R J. (1986). A WORLD IN CRISIS ? GEOGRAPHICAL PERSPECTIVES. BASIL BLACKWELL LIMITED.

Chicago Style aipamena

JOHNSTON R J. A WORLD IN CRISIS ? GEOGRAPHICAL PERSPECTIVES. OXFORD U K: BASIL BLACKWELL LIMITED, 1986.

MLA aipamena

JOHNSTON R J. A WORLD IN CRISIS ? GEOGRAPHICAL PERSPECTIVES. BASIL BLACKWELL LIMITED, 1986.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.