Παραπομπή σε μορφή APA (7η εκδ.)

Lesley, J. P. (1874). A collection of occasional surveys of iron, coal and oil districts in the United States: Made during the last ten years. McCalla & Stavely.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Lesley, J. P. A Collection of Occasional Surveys of Iron, Coal and Oil Districts in the United States: Made During the Last Ten Years. Philadelphia: McCalla & Stavely, 1874.

Παραπομπή σε μορφή MLA (8th εκδ.)

Lesley, J. P. A Collection of Occasional Surveys of Iron, Coal and Oil Districts in the United States: Made During the Last Ten Years. McCalla & Stavely, 1874.