MLA

Punsly, Brian, and Unspecified. Black Hole Gravitohydromagnetics. Springer Berlin Heidelberg, 2009.

APA

Punsly, B., & Unspecified, U. (2009). Black Hole Gravitohydromagnetics. Springer Berlin Heidelberg.

Chicago

Punsly, Brian, and Unspecified. Black Hole Gravitohydromagnetics. : Springer Berlin Heidelberg, 2009.