Ballard, R. The Solution of the Pyramid Problem; or, Pyramid Discoveries With a New Theory as to their Ancient Use.
Chicago-Zitierstil (17. Ausg.)Ballard, Robert. The Solution of the Pyramid Problem; or, Pyramid Discoveries With a New Theory as to Their Ancient Use.
MLA-Zitierstil (9. Ausg.)Ballard, Robert. The Solution of the Pyramid Problem; or, Pyramid Discoveries With a New Theory as to Their Ancient Use.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.