Note on the stage of Piroplasma bigeminum which occurs in the cattle tick, Margaropus annulatusv. 2No. 2American Society of Parasitologists87–92
Crawley, Howard. 1915. "Note on the stage of Piroplasma bigeminum which occurs in the cattle tick, Margaropus annulatus." The Journal of Parasitology, 2, (2) 87–92.