Cita APA (7th ed.)

Roper, S. (1970). Paper and pencil geometry. Franklin Publications.

Cita Chicago (17th ed.)

Roper, Susan. Paper and Pencil Geometry. Chicago, Ill: Franklin Publications, 1970.

Cita MLA (9th ed.)

Roper, Susan. Paper and Pencil Geometry. Franklin Publications, 1970.