APA Style
BUTENIN, . (1965).
ELEMNTARY OF THE THEORY OF NONLINEAR OSCILLATIONS .
united states of america:
BLAISDELL PUBLSHING COMPANY.
MLA Style
BUTENIN, .
"ELEMNTARY OF THE THEORY OF NONLINEAR OSCILLATIONS".
united states of america:
BLAISDELL PUBLSHING COMPANY,
1965.
Text.