Gaya APA

Posner, Richard A.. (1990). The Problems Of Jurisprudence . Cambridge: Harvard University Press.

Gaya Chicago

Posner, Richard A.. The Problems Of Jurisprudence. Cambridge: Harvard University Press, 1990. Text.

Gaya MLA

Posner, Richard A.. The Problems Of Jurisprudence. Cambridge: Harvard University Press, 1990. Text.

Gaya Turabian

Posner, Richard A.. The Problems Of Jurisprudence. Cambridge: Harvard University Press, 1990. Print.