Gaya APA
A Short Course in Differential Equations. (1969).
New York:
The macmillan company.
Gaya Chicago
A Short Course in Differential Equations.
ed.4.
New York:
The macmillan company,
1969.
.
Gaya MLA
A Short Course in Differential Equations.
ed.4.
New York:
The macmillan company,
1969.
.
Gaya Turabian
A Short Course in Differential Equations.
New York:
The macmillan company,
1969.
.