@article{article,
title = {Three external Parasites of Poultry},
author = {Robertson, G.Mcr.},
year = {1929},
journal = {Tasma nian J. Agrie, Tasmania, November},
volume = {1st. 1},
pages = {1, 18-20},
howpublished = "\url{https://eurekamag.com/research/013/590/013590074.php}"
}