Bronshtėn, V. A., & Orlov, S. V. (1948). Instruk︠t︡si︠i︡a dl︠i︡a nabl︠i︡udeni︠i︡a planet i komet. Izd-vo Akademii nauk SSSR.
Chicago Style (17th ed.) CitationBronshtėn, Vitaliĭ Aleksandrovich, and S. V. Orlov. Instruk︠t︡si︠i︡a Dl︠i︡a Nabl︠i︡udeni︠i︡a Planet I Komet. Moskva: Izd-vo Akademii nauk SSSR, 1948.
MLA (8th ed.) CitationBronshtėn, Vitaliĭ Aleksandrovich, and S. V. Orlov. Instruk︠t︡si︠i︡a Dl︠i︡a Nabl︠i︡udeni︠i︡a Planet I Komet. Izd-vo Akademii nauk SSSR, 1948.
Warning: These citations may not always be 100% accurate.