Gaya APA

Macdonald, I. (London : Letts and l). Essentials GCSE Design & technology, resistant materials : revison guide . London: London : Letts and lonsdale, 2009.

Gaya MLA

Macdonald, Ian. "Essentials GCSE Design & technology, resistant materials : revison guide". London: London : Letts and lonsdale, 2009, London : Letts and l. Text.