APA (7th ed.) Citation

Heisel, C. T., & Heisel, C. T. (1936). Fundamental truth: Startling, revolutionary geometrical laws, ratios and relations between straight lines and curved lines; the mathematical world defied and challenged to upset these new facts, figures and truths. Heisel.

Chicago Style (17th ed.) Citation

Heisel, Carl Theodore, and Carl Theodore Heisel. Fundamental Truth: Startling, Revolutionary Geometrical Laws, Ratios and Relations Between Straight Lines and Curved Lines; the Mathematical World Defied and Challenged to Upset These New Facts, Figures and Truths. Cleveland, Ohio: Heisel, 1936.

MLA (9th ed.) Citation

Heisel, Carl Theodore, and Carl Theodore Heisel. Fundamental Truth: Startling, Revolutionary Geometrical Laws, Ratios and Relations Between Straight Lines and Curved Lines; the Mathematical World Defied and Challenged to Upset These New Facts, Figures and Truths. Heisel, 1936.