APA:
Nikolov, Stoyan Ch., Georgiev, Dimiter, Ivanov, Bojidar, Iankov, Petar (2006). A recent evidence of the spring migration of mediterranean shearwater Puffinus yelkouan along the Bulgarian black sea coast.
Acrocephalus, volume 27, issue 128/129, str. 91-92.
URN:NBN:SI:DOC-PQCP3FMH from http://www.dlib.si
MLA:
Nikolov, Stoyan Ch., Georgiev, Dimiter, Ivanov, Bojidar, Iankov, Petar. "A recent evidence of the spring migration of mediterranean shearwater Puffinus yelkouan along the Bulgarian black sea coast."
Acrocephalus volume 27. issue 128/129 (2006) str. 91-92.
<http://www.dlib.si/?URN=URN:NBN:SI:DOC-PQCP3FMH>