Institut pochvovedeni︠i︡a i fotosinteza (Akademi︠i︡a nauk SSSR), Nauchnyĭ ︠t︡sentr plodorodi︠i︡a pochv (Czechoslovakia), Hraško, J., & Kefeli, V. I. (1990). Povedenie poll︠i︡utantov v pochvakh i landshaftakh: Sbornik nauchnykh trudov. Nauch. ︠t︡sentr biologicheskikh issl. AN SSSR.
Παραπομπή σε μορφή Chicago (17η εκδ.)Institut pochvovedeni︠i︡a i fotosinteza (Akademi︠i︡a nauk SSSR), Nauchnyĭ ︠t︡sentr plodorodi︠i︡a pochv (Czechoslovakia), Juraj Hraško, και V. I. Kefeli. Povedenie Poll︠i︡utantov V Pochvakh I Landshaftakh: Sbornik Nauchnykh Trudov. Pushchino: Nauch. ︠t︡sentr biologicheskikh issl. AN SSSR, 1990.
Παραπομπή σε μορφή MLA (8th εκδ.)Institut pochvovedeni︠i︡a i fotosinteza (Akademi︠i︡a nauk SSSR), et al. Povedenie Poll︠i︡utantov V Pochvakh I Landshaftakh: Sbornik Nauchnykh Trudov. Nauch. ︠t︡sentr biologicheskikh issl. AN SSSR, 1990.