APA

wood ،jenry, . (1991). snakes. wiltshier: merlion publishing ltd.

Chicago

wood ،jenry, . 1991. snakes. wiltshier: merlion publishing ltd.

Harvard

wood ،jenry, . (1991). snakes. wiltshier: merlion publishing ltd.

MLA

wood ،jenry, . snakes. wiltshier: merlion publishing ltd. 1991.