Sundberg, K. (1936). Principles of the Swedish geo-electrical methods. Centraltrycheriet.
芝加哥风格引文Sundberg, Karl. Principles of the Swedish Geo-electrical Methods. Stockholm: Centraltrycheriet, 1936.
MLA引文Sundberg, Karl. Principles of the Swedish Geo-electrical Methods. Centraltrycheriet, 1936.
警告：这些引文格式不一定是100％准确.