Gaya APA

Theakson, W., C, I, H. (1978). The Analysis of Geograpichal data . London: London: Heinemann Educational books; 1978.

Gaya MLA

Theakson, W.H., C, I., Harrison,. "The Analysis of Geograpichal data". London: London: Heinemann Educational books; 1978, 1978. Text.