APA
Borch K., Aase K. K. (. & Sandmo A. (. (1990). Economics of Insurance. Amsterdam: North-Holland.
Chicago
Borch K, Aase Knut K (ed) and Sandmo Agnar (ed). 1990. Economics of Insurance. Amsterdam: North-Holland.
Harvard
Borch K., Aase K. K. (. and Sandmo A. (. (1990). Economics of Insurance. Amsterdam: North-Holland.
MLA
Borch K, Aase Knut K (ed) and Sandmo Agnar (ed). Economics of Insurance. Amsterdam: North-Holland. 1990.