Gridgeman, N. T. (1945). The estimation of vitamin A (2nd [corr.] impression.). Lever Brothers & Unilever.
芝加哥风格引文Gridgeman, N. T. The Estimation of Vitamin A. 2nd [corr.] impression. Port Sunlight, [Eng.]: Lever Brothers & Unilever, 1945.
MLA引文Gridgeman, N. T. The Estimation of Vitamin A. 2nd [corr.] impression. Lever Brothers & Unilever, 1945.
警告：这些引文格式不一定是100％准确.