APA

Felix J., Hisek K., . (1985). The Illustrated book of birds. London: Octopus books limited.

Chicago

Felix J, Hisek K, . 1985. The Illustrated book of birds. London: Octopus books limited.

Harvard

Felix J., Hisek K., . (1985). The Illustrated book of birds. London: Octopus books limited.

MLA

Felix J, Hisek K, . The Illustrated book of birds. London: Octopus books limited. 1985.