APA

Wilkinson J., Tweedie M. W. F., . (1980). A handguide to the butterflies and moths of Britain and Europe. London: Treasure Press.

Chicago

Wilkinson John, Tweedie M W F, . 1980. A handguide to the butterflies and moths of Britain and Europe. London: Treasure Press.

Harvard

Wilkinson J., Tweedie M. W. F., . (1980). A handguide to the butterflies and moths of Britain and Europe. London: Treasure Press.

MLA

Wilkinson John, Tweedie M W F, . A handguide to the butterflies and moths of Britain and Europe. London: Treasure Press. 1980.