APA
ALDERTON D., . (2002). THE COMPLETE BOOK OF BIRDS. new york: Hermes house.
Chicago
ALDERTON DAVID, . 2002. THE COMPLETE BOOK OF BIRDS. new york: Hermes house.
Harvard
ALDERTON D., . (2002). THE COMPLETE BOOK OF BIRDS. new york: Hermes house.
MLA
ALDERTON DAVID, . THE COMPLETE BOOK OF BIRDS. new york: Hermes house. 2002.