APA Style
Langen, Dietrich. (1984).
Gangguan Tidur .
Jakarta:
Grafidian Jaya.
Chicago Style
Langen, Dietrich.
Gangguan Tidur.
Jakarta:
Grafidian Jaya,
1984.
Printed Book.
MLA Style
Langen, Dietrich.
Gangguan Tidur.
Jakarta:
Grafidian Jaya,
1984.
Printed Book.
Turabian Style
Langen, Dietrich.
Gangguan Tidur.
Jakarta:
Grafidian Jaya,
1984.
Printed Book.