Petrov, R., & Cholakova, D. Oldest known captive Saker Falcon (Falco cherrug cherrug) at 31 years old. Pensoft Publishers.
Chicago Style (17th ed.) CitationPetrov, Rusko, and Dariya Cholakova. Oldest Known Captive Saker Falcon (Falco Cherrug Cherrug) at 31 Years Old. Pensoft Publishers.
MLA (9th ed.) CitationPetrov, Rusko, and Dariya Cholakova. Oldest Known Captive Saker Falcon (Falco Cherrug Cherrug) at 31 Years Old. Pensoft Publishers.
Warning: These citations may not always be 100% accurate.