APA
Kennedy W. K. ., Rogers T. A. ., . (1985). Human and animal powered water-lifting devices: A state of the out survey. : Intermediate technology publications.
Chicago
Kennedy W K, Rogers T A, . 1985. Human and animal powered water-lifting devices: A state of the out survey. : Intermediate technology publications.
Harvard
Kennedy W. K. ., Rogers T. A. ., . (1985). Human and animal powered water-lifting devices: A state of the out survey. : Intermediate technology publications.
MLA
Kennedy W K, Rogers T A, . Human and animal powered water-lifting devices: A state of the out survey. : Intermediate technology publications. 1985.