APA Citation

Liu, K., & Liu, K. (1994). Statistical issues related to semiquantitative food-frequency questionnaires. [Lugar de publicación no identificado]: [editor no identificado].

Chicago Style Citation

Liu, Kiang, and Kiang Liu. Statistical Issues Related to Semiquantitative Food-frequency Questionnaires. [Lugar de publicación no identificado]: [editor no identificado], 1994.

MLA Citation

Liu, Kiang, and Kiang Liu. Statistical Issues Related to Semiquantitative Food-frequency Questionnaires. [Lugar de publicación no identificado]: [editor no identificado], 1994.

Warning: These citations may not always be 100% accurate.