Παραπομπή σε μορφή APA (7η εκδ.)

Não informado. (2020). Abstracts of Bulgarian Scientific Literature. Agricultural Academy, Center for Scientific, Technic and Economic Information.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Não informado. Abstracts of Bulgarian Scientific Literature. Sofia: Agricultural Academy, Center for Scientific, Technic and Economic Information, 2020.

Παραπομπή σε μορφή MLA (8th εκδ.)

Não informado. Abstracts of Bulgarian Scientific Literature. Agricultural Academy, Center for Scientific, Technic and Economic Information, 2020.

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