Cita APA

Daber, R., & Helms, J. (1985). Fossils: The oldest treasures that Ever Lived. USA: T.F.H. Publications.

Citación estilo Chicago

Daber, Rudolf, y Jochen Helms. Fossils: The Oldest Treasures That Ever Lived. USA: T.F.H. Publications, 1985.

Cita MLA

Daber, Rudolf, y Jochen Helms. Fossils: The Oldest Treasures That Ever Lived. USA: T.F.H. Publications, 1985.