Gaya APA
John, Fritz. (1979).
Partial differential equations (3rd ed).
Singapore:
Toppan.
Gaya Chicago
John, Fritz.
Partial differential equations.
3rd ed
Singapore:
Toppan,
1979.
Text.
Gaya MLA
John, Fritz.
Partial differential equations.
3rd ed
Singapore:
Toppan,
1979.
Text.
Gaya Turabian
John, Fritz.
Partial differential equations.
3rd ed
Singapore:
Toppan,
1979.
Print.