Gaya APA
Perrins, Christopher M, Middleton, Alex L. A. (1985).
The encyclopaedia of birds .
England:
Grolier International, Inc.
Gaya Chicago
Perrins, Christopher M, Middleton, Alex L. A.
The encyclopaedia of birds.
England:
Grolier International, Inc,
1985.
Text.
Gaya MLA
Perrins, Christopher M, Middleton, Alex L. A.
The encyclopaedia of birds.
England:
Grolier International, Inc,
1985.
Text.
Gaya Turabian
Perrins, Christopher M, Middleton, Alex L. A.
The encyclopaedia of birds.
England:
Grolier International, Inc,
1985.
Print.