MLA

Onyshkevich Ignaīĭ I. I. Onyshkevicha Ruska biblīoteka ... Institut Stavrovigīĭskīĭ, 1877. https://collections.library.yale.edu/catalog/30704392.

APA, 6th edition

Onyshkevich Ignaīĭ I. (1877). I. Onyshkevicha Ruska biblīoteka ... Institut Stavrovigīĭskīĭ. https://collections.library.yale.edu/catalog/30704392.