APA:
Nikolov, Stoyan Ch., Profirov, Lyubomir, Gerdjikov, Georgi, Gradinarov, Dimitar (2007). A review of the observations of great spotted cuckoo Clamator glandarius in Bulgaria in 2006 and 2007.
Acrocephalus, volume 28, issue 133, str. 75-76.
URN:NBN:SI:DOC-Y3TN2941 from http://www.dlib.si
MLA:
Nikolov, Stoyan Ch., Profirov, Lyubomir, Gerdjikov, Georgi, Gradinarov, Dimitar. "A review of the observations of great spotted cuckoo Clamator glandarius in Bulgaria in 2006 and 2007."
Acrocephalus volume 28. issue 133 (2007) str. 75-76.
<http://www.dlib.si/?URN=URN:NBN:SI:DOC-Y3TN2941>