Wilson, R., Green, J. A., Boyd, I. L., Woakes, A. J., Green, C. J., & Butler, P. J. (2009). Tracking macaroni penguins during long foraging trips using ‘behavioural geolocation’. Polar Biology, 32(4), p. 645. doi:10.1007/s00300-008-0568-z

Wilson, Rory, Jonathan A. Green, Ian L. Boyd, Anthony J. Woakes, Chris J. Green, and Patrick J. Butler. "Tracking Macaroni Penguins During Long Foraging Trips Using ‘behavioural Geolocation’." Polar Biology 32, no. 4 (2009): 645.

Wilson, Rory, et al. "Tracking Macaroni Penguins During Long Foraging Trips Using ‘behavioural Geolocation’." Polar Biology 32.4 (2009): 645.