Cita APA (7th ed.)

Becker, S., & Mahmud, S. (1984). A validation study of backward and forwarrd pregnancy histories in Matlab, Bangladesh. International Statistical Institute.

Cita Chicago (17th ed.)

Becker, Stan, i Simeen Mahmud. A Validation Study of Backward and Forwarrd Pregnancy Histories in Matlab, Bangladesh. The Hague: International Statistical Institute, 1984.

Cita MLA (9th ed.)

Becker, Stan, i Simeen Mahmud. A Validation Study of Backward and Forwarrd Pregnancy Histories in Matlab, Bangladesh. International Statistical Institute, 1984.