Peter II, Prince-Bishop of Montenegro, 1813-1851 (Personal Name)
- Petar II, Prince-Bishop of Montenegro, 1813-1851
- Njegoš, Rade Petrović, 1813-1851
- Njegoš, Petar Petrović, 1813-1851
- Nyegosh, P. P., 1813-1851
- Rade Tomov, 1813-1851
- Rade Tomov Petrović, 1813-1851
- Njegosh, Peter Petrovich, 1813-1851
- Njegoš, P. P. (Petar Petrović), 1813-1851
- Petr, II, Prince-Bishop of Montenegro, 1813-1851
- Ni͡egosh, Rade Petrovich, 1813-1851
- Negosh, Rade Petrovich, 1813-1851
His Horský věnec, 1897.
Šantić, G. Ja, Rade Tomov, 1979: t.p. (Petar Petrović Njegoš; Rade Tomov) p. 9 (Rade Tomov Petrović)
Prvulovich, Z. R. Religious philosophy of Prince-Bishop Njegosh of Montenegro (1813-1851), 1984: t.p. (Prince-Bishop Njegosh of Montenegro, 1813-1851) p. ix (baptismal name, Rade; as ruling prince, referred to as Peter II Petrovich)
LCCN 74-264310: P.P. Njegoš, 1813-1963, 1963 (hdg.: Petar II, Prince Bishop of Montenegro, 1813-1851; usage not given)
Petr II (Rade) Petrovich Ni͡egosh, vladyka chernogorskīĭ, 1889.
Britannica online, July 1, 2005 (Peter II; Montenegrin in full: Petar Petrović Njegoš; b. Nov. 13 [Nov. 1, Old style], 1813, Njegoš, Montenegro; d. Oct. 31 [Oct. 19, o.s.], 1851, Cetinje; vladika or prince-bishop of Montenegro from 1830 to 1851)
Secular name: Rade Petrović Njegoš