APA citiranje

Osborne, R. H. (1967). East-Central Europe: A Geographical introduction to seven socialist states. London: Chatto & Windus.

Trích dẫn kiểu Chicago

Osborne, R. H. East-Central Europe: A Geographical Introduction to Seven Socialist States. London: Chatto & Windus, 1967.

MLA citiranje

Osborne, R. H. East-Central Europe: A Geographical Introduction to Seven Socialist States. London: Chatto & Windus, 1967.