"Frequenz", 38.3 (1984): 53-76. Retrieved 23 May. 2013, from http://www.degruyter.com/view/j/freq.1984.38.3/issue-files/freq.1984.38.3.xml

Frequenz (1984), 38(3), pp. 53-76. Retrieved 23 May. 2013, from http://www.degruyter.com/view/j/freq.1984.38.3/issue-files/freq.1984.38.3.xml

Frequenz. 1984. 38(3): 53-76. Retrieved 23 May. 2013, from http://www.degruyter.com/view/j/freq.1984.38.3/issue-files/freq.1984.38.3.xml