Sechrest, L. (1979). Unobtrusive measurement today. Jossey-Bass.
芝加哥风格引文Sechrest, Lee. Unobtrusive Measurement Today. San Francisco, Calif: Jossey-Bass, 1979.
MLA引文Sechrest, Lee. Unobtrusive Measurement Today. Jossey-Bass, 1979.
警告：这些引文格式不一定是100％准确.