APA
Gunn J., . (19). Nelson's Biographical Dictionary. London: Thomas Nelson & Sons Ltd.
Chicago
Gunn John, . 19. Nelson's Biographical Dictionary. London: Thomas Nelson & Sons Ltd.
Harvard
Gunn J., . (19). Nelson's Biographical Dictionary. London: Thomas Nelson & Sons Ltd.
MLA
Gunn John, . Nelson's Biographical Dictionary. London: Thomas Nelson & Sons Ltd. 19.
