Campbell, L.H.; Avery, M.I.; Donald, P.; Evans, A.D.; Green, R.E.; Wilson, J.D. (1997). A Review of the Indirect Effects of Pesticides on Birds(PDF) (Report). Peterborough, UK: Joint Nature Conservation Committee, Report. no 227. p. 27. ISSN0963-8091. Archived from the original(PDF) on 22 December 2015. Retrieved 11 August 2015.
Cummins, S.; O'Halloran, J. (2002). "An assessment of the diet of nestling Stonechats using compositional analysis: Coleoptera (beetles), Hymenoptera (sawflies, ichneumon flies, bees, wasps and ants), terrestrial larvae (moth, sawfly and beetle) and Arachnida (spiders and harvestmen) accounted for 81% of Stonechat nestling diet". Bird Study. 49 (2): 139–145. doi:10.1080/00063650209461258. S2CID86569805.
Nelson, W.A.; Farstad, C.W. (2012). "Biology of Bracon cephi (Gahan) (Hymenoptera: Braconidae), an important native parasite of the wheat stem sawfly, Cephus cinctus Nort. (Hymenoptera: Cephidae), in Western Canada". The Canadian Entomologist. 85 (3): 103–107. doi:10.4039/Ent85103-3. S2CID85132364.
Morris, K.R.S.; Cameron, E.; Jepson, W.F. (1937). "The insect parasites of the spruce sawfly (Diprion polytomum, Htg.) in Europe". Bulletin of Entomological Research. 28 (3): 341–393. doi:10.1017/S0007485300038840.
Phillips, C. (1992). "Spitfires – Defoliating Sawflies"(PDF). Department of Primary Industries and Resources. Government of South Australia. Archived from the original(PDF) on 6 April 2015. Retrieved 11 August 2015.
Cummins, S.; O'Halloran, J. (2002). "An assessment of the diet of nestling Stonechats using compositional analysis: Coleoptera (beetles), Hymenoptera (sawflies, ichneumon flies, bees, wasps and ants), terrestrial larvae (moth, sawfly and beetle) and Arachnida (spiders and harvestmen) accounted for 81% of Stonechat nestling diet". Bird Study. 49 (2): 139–145. doi:10.1080/00063650209461258. S2CID86569805.
Nelson, W.A.; Farstad, C.W. (2012). "Biology of Bracon cephi (Gahan) (Hymenoptera: Braconidae), an important native parasite of the wheat stem sawfly, Cephus cinctus Nort. (Hymenoptera: Cephidae), in Western Canada". The Canadian Entomologist. 85 (3): 103–107. doi:10.4039/Ent85103-3. S2CID85132364.
Phillips, C. (1992). "Spitfires – Defoliating Sawflies"(PDF). Department of Primary Industries and Resources. Government of South Australia. Archived from the original(PDF) on 6 April 2015. Retrieved 11 August 2015.
Campbell, L.H.; Avery, M.I.; Donald, P.; Evans, A.D.; Green, R.E.; Wilson, J.D. (1997). A Review of the Indirect Effects of Pesticides on Birds(PDF) (Report). Peterborough, UK: Joint Nature Conservation Committee, Report. no 227. p. 27. ISSN0963-8091. Archived from the original(PDF) on 22 December 2015. Retrieved 11 August 2015.
Campbell, L.H.; Avery, M.I.; Donald, P.; Evans, A.D.; Green, R.E.; Wilson, J.D. (1997). A Review of the Indirect Effects of Pesticides on Birds(PDF) (Report). Peterborough, UK: Joint Nature Conservation Committee, Report. no 227. p. 27. ISSN0963-8091. Archived from the original(PDF) on 22 December 2015. Retrieved 11 August 2015.