APA
Watt W. B., Chew F. S., Snyder L. R. G., Watt A. G. & Rothschild D. E. (1977). Population structure of pierid butterflies : I. Numbers and movements of some montane Colias species. : Oecologia.
Chicago
Watt Ward B, Chew Frances S, Snyder Lee R G, Watt Alice G and Rothschild David E. 1977. Population structure of pierid butterflies : I. Numbers and movements of some montane Colias species. : Oecologia.
Harvard
Watt W. B., Chew F. S., Snyder L. R. G., Watt A. G. and Rothschild D. E. (1977). Population structure of pierid butterflies : I. Numbers and movements of some montane Colias species. : Oecologia.
MLA
Watt Ward B, Chew Frances S, Snyder Lee R G, Watt Alice G and Rothschild David E. Population structure of pierid butterflies : I. Numbers and movements of some montane Colias species. : Oecologia. 1977.