Žinduolių pavadinimų žodynas. - Ekologijos inst. l-kla. R. Mažeikytė, E. Mickevičius, J. Prūsaitė, K. Baranauskas, R. Baleišis. 2002.
Daurian Pika — Conservation status … Wikipedia
Pika — Not to be confused with Pica or Pikachu. Pika[1] Temporal range: Oligocene–Recent[2] … Wikipedia
American Pika — American pika[1] An American pika feeding on grass in the Canadian Rocky Mountains Conservation status … Wikipedia
Collared Pika — Collared Pika[1] Conservation status Least Concern … Wikipedia
Northern Pika — Northern Pika[1] Ochotona hyperborea yesoensis Conservation status … Wikipedia
Turkestan Red Pika — Conservation status Least Concern (IUCN 3.1)[1] … Wikipedia
Pallas's Pika — Pallas s Pika[1] O. pallasi Conservation status … Wikipedia
Alpine Pika — Conservation status Least Concern ( … Wikipedia
Helan Shan Pika — Ochotona pallasi ssp. helanshanensis Zheng, 1987 (found in Wang 1990) Helan Shan Pika Conservation status Critically Endangered (IUCN 3.1)[1] … Wikipedia
Gansu Pika — Conservation status Least Concern (IUCN 3.1)[1] … Wikipedia
