APA aipamena

Kelly, A., & Nicholson, R. (1971). Strengthening methods in crystals. Elsevier Pub. Co..

Chicago Style aipamena

Kelly, A., and Robin Nicholson. Strengthening Methods in Crystals. Amsterdam: Elsevier Pub. Co., 1971.

MLA aipamena

Kelly, A., and Robin Nicholson. Strengthening Methods in Crystals. Elsevier Pub. Co., 1971.