APA

Dworkin G., Bok S. & Frey R. G. (1998). Euthanasia and physician-assisted suicide. Cambridge: Cambridge University Press.

Chicago

Dworkin Gerald, Bok Sissela and Frey Raymond Gillespie. 1998. Euthanasia and physician-assisted suicide. Cambridge: Cambridge University Press.

Harvard

Dworkin G., Bok S. and Frey R. G. (1998). Euthanasia and physician-assisted suicide. Cambridge: Cambridge University Press.

MLA

Dworkin Gerald, Bok Sissela and Frey Raymond Gillespie. Euthanasia and physician-assisted suicide. Cambridge: Cambridge University Press. 1998.