APA (7th ed.) Citation

Fischbein, S., & Åkerman, B. A. (1990). Tvillingar - en riskgrupp. Research report series.

Chicago Style (17th ed.) Citation

Fischbein, Siv, and Britta A. Åkerman. "Tvillingar - En Riskgrupp." Research Report Series 1990.

MLA (8th ed.) Citation

Fischbein, Siv, and Britta A. Åkerman. "Tvillingar - En Riskgrupp." Research Report Series, 1990.

Warning: These citations may not always be 100% accurate.