APA引文

Sandahl, B. (1975). Seasonal and secular trends in reproductive wastage in Sweden. s.n.].

Chicago Style (17th ed.) Citation

Sandahl, Björn. Seasonal and Secular Trends in Reproductive Wastage in Sweden. Lund [Sweden: s.n.], 1975.

MLA引文

Sandahl, Björn. Seasonal and Secular Trends in Reproductive Wastage in Sweden. s.n.], 1975.

警告：这些引文格式不一定是100％准确.