Johnston, B. (1989). practical assessment in science: Physics. heinemann Educational Books.
Cita Chicago (17th ed.)Johnston, Brian. Practical Assessment in Science: Physics. London: heinemann Educational Books, 1989.
Cita MLA (9th ed.)Johnston, Brian. Practical Assessment in Science: Physics. heinemann Educational Books, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.