APA Style
Wagner, David L. ().
The pertial ring pendulum .
:
.
Chicago Style
Wagner, David L.
The pertial ring pendulum .
:
,
.
.
MLA Style
Wagner, David L.
The pertial ring pendulum .
:
,
.
.
Turabian Style
Wagner, David L.
The pertial ring pendulum .
:
,
.
.