Cita APA (7a ed.)
Perkins, D. Calculus and Its Origins. Mathematical Association of America.
Cita estilo Chicago (17a ed.)
Perkins, David. Calculus and Its Origins. Washington, EUA: Mathematical Association of America.
Cita MLA (9a ed.)
Perkins, David. Calculus and Its Origins. Mathematical Association of America.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.