Referentie:
Falk, Steven & Early, Jeremy. (2021). Pemphredon fabricii (Hymenoptera: Crabronidae) new to Britain. British Journal of Entomology & Natural History. 34. 23-33.
URL:
https://www.researchgate.net/publication/349590544_Pemphredon_fabricii_Hymenoptera_Crabronidae_new_to_Britain