Cita APA (7th ed.)

Friederichs, H. F. (1969). How to find my German ancestors and relatives. Degener.

Cita Chicago (17th ed.)

Friederichs, Heinz Friedrich. How to Find My German Ancestors and Relatives. Neustadt an der Aisch: Degener, 1969.

Cita MLA (8th ed.)

Friederichs, Heinz Friedrich. How to Find My German Ancestors and Relatives. Degener, 1969.