Cita APA (7th ed.)

Hook, G., & Ingram, B. (1989). Science problem solving: A learning strategy. Longman Cheshire.

Cita Chicago (17th ed.)

Hook, George, i Brent Ingram. Science Problem Solving: A Learning Strategy. Melbourne: Longman Cheshire, 1989.

Cita MLA (9th ed.)

Hook, George, i Brent Ingram. Science Problem Solving: A Learning Strategy. Longman Cheshire, 1989.