APA

Barth F. G., . (1985). The insects and flowers. Princeton, New Jersey: Princeton University.

Chicago

Barth Friedrich G, . 1985. The insects and flowers. Princeton, New Jersey: Princeton University.

Harvard

Barth F. G., . (1985). The insects and flowers. Princeton, New Jersey: Princeton University.

MLA

Barth Friedrich G, . The insects and flowers. Princeton, New Jersey: Princeton University. 1985.