Cita APA (7th ed.)

Bastow, B., & Title : Another twenty mathematical investigations. (1986). Another 20 mathematical investigations. The Association.

Cita Chicago (17th ed.)

Bastow, Barry, i Title : Another twenty mathematical investigations. Another 20 Mathematical Investigations. Nedlands, Western Australia: The Association, 1986.

Cita MLA (9th ed.)

Bastow, Barry, i Title : Another twenty mathematical investigations. Another 20 Mathematical Investigations. The Association, 1986.