Obert, L. (1967). Determination of stress in rock: A state-of-the-art report : a symposium presented at the sixty-ninth annual meeting, American Society for Testing and Materials, Atlantic City, N.J., 26 June-1 July, 1966. American Society for Testing and Materials.
Цитирование в стиле Чикаго (17-е изд.)Obert, Leonard. Determination of Stress in Rock: A State-of-the-art Report : A Symposium Presented at the Sixty-ninth Annual Meeting, American Society for Testing and Materials, Atlantic City, N.J., 26 June-1 July, 1966. Philadelphia: American Society for Testing and Materials, 1967.
Цитирование MLA (8-е изд.)Obert, Leonard. Determination of Stress in Rock: A State-of-the-art Report : A Symposium Presented at the Sixty-ninth Annual Meeting, American Society for Testing and Materials, Atlantic City, N.J., 26 June-1 July, 1966. American Society for Testing and Materials, 1967.