Παραπομπή APA

Hardy, H. R., Jr., & Reginald-Hardy, H. (1989). Acoustic emission/microseismic activity in geologic structures and materials: Proceedings of the fourth conference held at the Pensylvania State University Park, Pensylvania October 22-24, 1985. Clausthal, Germany: Trans Tech Publications.

Παραπομπή Chicago Style

Hardy, H. Reginald, Jr., and H. Reginald-Hardy. Acoustic Emission/microseismic Activity in Geologic Structures and Materials: Proceedings of the Fourth Conference Held At the Pensylvania State University Park, Pensylvania October 22-24, 1985. Clausthal, Germany: Trans Tech Publications, 1989.

Παραπομπή MLA

Hardy, H. Reginald, Jr., and H. Reginald-Hardy. Acoustic Emission/microseismic Activity in Geologic Structures and Materials: Proceedings of the Fourth Conference Held At the Pensylvania State University Park, Pensylvania October 22-24, 1985. Clausthal, Germany: Trans Tech Publications, 1989.

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