Template:Berry et al., 1997a
- Berry, J.A., Harris, R.J., Read, P.E.C. & Donovan, B.J. 1997: Morphological and colour differences between subspecies of Sphecophaga vesparum (Curtis) (Hymenoptera: Ichneumonidae). New Zealand journal of zoology 24(1): 35–46. DOI: 10.1080/03014223.1997.9518104
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