Cita APA

Janssen, A., Alt, J., Pung, R., & Spring, P. (1998). Letters to the United States of America. Steyler Verlag.

Chicago Style (17th ed.) Citation

Janssen, Arnold, Josef Alt, Robert Pung, i Peter Spring. Letters to the United States of America. Nettetal: Steyler Verlag, 1998.

Cita MLA

Janssen, Arnold, et al. Letters to the United States of America. Steyler Verlag, 1998.