Παραπομπή σε μορφή APA (7η εκδ.)

Broadhurst, J. H. (1959). The development and use of a physical method for measuring the penetration of oxygen into coals. University of Birminghaml.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Broadhurst, John Henry. The Development and Use of a Physical Method for Measuring the Penetration of Oxygen into Coals. England: University of Birminghaml, 1959.

Παραπομπή σε μορφή MLA (8th εκδ.)

Broadhurst, John Henry. The Development and Use of a Physical Method for Measuring the Penetration of Oxygen into Coals. University of Birminghaml, 1959.