Dyfyniad APA

Cheng, Y., Wu, J., Zhu, H., & Lin, J. (2009). Butane-1,2,3,4-tetra­carboxylic acid dihydrate. International Union of Crystallography.

Dyfyniad Arddull Chicago

Cheng, Yu, Jiang Wu, Hong-Lin Zhu, and Jian-li Lin. Butane-1,2,3,4-tetra­carboxylic Acid Dihydrate. International Union of Crystallography, 2009.

Dyfyniad MLA

Cheng, Yu, Jiang Wu, Hong-Lin Zhu, and Jian-li Lin. Butane-1,2,3,4-tetra­carboxylic Acid Dihydrate. International Union of Crystallography, 2009.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.