Penggayaan APA
JOHNSON, R.S.. (2012).
An introduction to partial differential equations .
[s.l.]:
[s.n.].
Chicago Style
JOHNSON, R.S..
An introduction to partial differential equations.
[s.l.]:
[s.n.],
2012.
Buku.
MLA Style
JOHNSON, R.S..
An introduction to partial differential equations.
[s.l.]:
[s.n.],
2012.
Buku.
Turabian Style
JOHNSON, R.S..
An introduction to partial differential equations.
[s.l.]:
[s.n.],
2012.
Buku.