APA
Duggan A., . (1957). My life for my sheep. New York: Image Books.
Chicago
Duggan Alfred, . 1957. My life for my sheep. New York: Image Books.
Harvard
Duggan A., . (1957). My life for my sheep. New York: Image Books.
MLA
Duggan Alfred, . My life for my sheep. New York: Image Books. 1957.
