Penggayaan APA
GRASS : . (1989).
Boston:
Blackwell Scientific Publications.
Chicago Style
GRASS : .
2nd ed..
Boston:
Blackwell Scientific Publications,
1989.
Buku.
MLA Style
GRASS : .
2nd ed..
Boston:
Blackwell Scientific Publications,
1989.
Buku.
Turabian Style
GRASS : .
Boston:
Blackwell Scientific Publications,
1989.
Buku.