Dahlin, J., Kanui, T. I., Wambugu, S. N. and Abelson, K. S. P. (2012) “The Suspended Formalin Test: A Method Designed for Studying Formalin-Induced Behaviour in the Speke’s Hingeback Tortoise (Kinixys spekii)”, Scandinavian Journal of Laboratory Animal Science, 39(1), pp. 11–15. doi: 10.23675/sjlas.v39i1.245.