APA:
Demerdzhiev, Dimitar, Stoychev, Stoycho (2008). Status of the masked shrike Lanius nubicus in Bulgaria.
Acrocephalus, volume 29, issue 137, str. 99-104.
URN:NBN:SI:DOC-TOFONT6D from http://www.dlib.si
MLA:
Demerdzhiev, Dimitar, Stoychev, Stoycho. "Status of the masked shrike Lanius nubicus in Bulgaria."
Acrocephalus volume 29. issue 137 (2008) str. 99-104.
<http://www.dlib.si/?URN=URN:NBN:SI:DOC-TOFONT6D>