APA Style
PETROVSKY, I.G.. (1991).
LEKTURES ON PARTIAL DIFFERENTIAL EQUATIONS .
NEW YORK:
.
Chicago Style
PETROVSKY, I.G..
LEKTURES ON PARTIAL DIFFERENTIAL EQUATIONS.
NEW YORK:
,
1991.
Text.
MLA Style
PETROVSKY, I.G..
LEKTURES ON PARTIAL DIFFERENTIAL EQUATIONS.
NEW YORK:
,
1991.
Text.
Turabian Style
PETROVSKY, I.G..
LEKTURES ON PARTIAL DIFFERENTIAL EQUATIONS.
NEW YORK:
,
1991.
Print.