APA aipamena

Parsons, W. (1938). Early Catholic Publishers of Philadelphia. Washington, D.C..

Chicago Style aipamena

Parsons, Wilfrid. Early Catholic Publishers of Philadelphia. Washington, D.C., 1938.

MLA aipamena

Parsons, Wilfrid. Early Catholic Publishers of Philadelphia. Washington, D.C., 1938.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.