Gaya APA
Bumi: pustaka alam life. (1980).
Jakarta:
Tira pustaka.
Gaya Chicago
Bumi: pustaka alam life.
.
Jakarta:
Tira pustaka,
1980.
.
Gaya MLA
Bumi: pustaka alam life.
.
Jakarta:
Tira pustaka,
1980.
.
Gaya Turabian
Bumi: pustaka alam life.
Jakarta:
Tira pustaka,
1980.
.