APA
Sweeney R. C. H., . (1976). Insect life in East and Central Africa. London: Longman.
Chicago
Sweeney R C H, . 1976. Insect life in East and Central Africa. London: Longman.
Harvard
Sweeney R. C. H., . (1976). Insect life in East and Central Africa. London: Longman.
MLA
Sweeney R C H, . Insect life in East and Central Africa. London: Longman. 1976.