Gaya APA
Enchev, D., D. (2017).
Acta Scientifica Naturalis. Volume 1 (Vol.1).
Bulgaria:
K.Preslavsky University of Shumen.
Gaya MLA
Enchev, Dobromir, D..
"Acta Scientifica Naturalis. Volume 1".
Vol.1
Bulgaria:
K.Preslavsky University of Shumen,
2017.
Koleksi Berkala.