APA引文

Pyörälä, T. (1966). Cardiovascular response to the upright position during pregnancy. s.n..

Chicago Style (17th ed.) Citation

Pyörälä, Tapani. Cardiovascular Response to the Upright Position During Pregnancy. Helsinsi: s.n., 1966.

MLA引文

Pyörälä, Tapani. Cardiovascular Response to the Upright Position During Pregnancy. s.n., 1966.