"Zeitschrift für physiologische Chemie", 5.1 (1881): 1-80. Retrieved 25 May. 2013, from http://www.degruyter.com/view/j/bchm1.1881.5.issue-1/issue-files/bchm1.1881.5.issue-1.xml

Zeitschrift für physiologische Chemie (1881), 5(1), pp. 1-80. Retrieved 25 May. 2013, from http://www.degruyter.com/view/j/bchm1.1881.5.issue-1/issue-files/bchm1.1881.5.issue-1.xml

Zeitschrift für physiologische Chemie. 1881. 5(1): 1-80. Retrieved 25 May. 2013, from http://www.degruyter.com/view/j/bchm1.1881.5.issue-1/issue-files/bchm1.1881.5.issue-1.xml