International Conference on Petroleum Chemistry Tomsk, Russia, Institut khimii nefti (Akademi︠i︡a nauk SSSR), Nauchnyĭ sovet po neftekhimii (Akademi︠i︡a nauk SSSR), & Unger, F. G. (1991). Mezhdunarodna︠i︡a konferen︠t︡si︠i︡a po khimii nefti, 1-4 okt︠i︡abr︠i︡a 1991 g.: Tezisy dokladov. Tomskiĭ nauch. ︠t︡sentr SO AN SSSR.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Conference on Petroleum Chemistry Tomsk, Russia, Institut khimii nefti (Akademi︠i︡a nauk SSSR), Nauchnyĭ sovet po neftekhimii (Akademi︠i︡a nauk SSSR), و F. G. Unger. Mezhdunarodna︠i︡a Konferen︠t︡si︠i︡a Po Khimii Nefti, 1-4 Okt︠i︡abr︠i︡a 1991 G.: Tezisy Dokladov. Tomsk: Tomskiĭ nauch. ︠t︡sentr SO AN SSSR, 1991.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)International Conference on Petroleum Chemistry Tomsk, Russia, et al. Mezhdunarodna︠i︡a Konferen︠t︡si︠i︡a Po Khimii Nefti, 1-4 Okt︠i︡abr︠i︡a 1991 G.: Tezisy Dokladov. Tomskiĭ nauch. ︠t︡sentr SO AN SSSR, 1991.