Styl cytowania APA

Earl , B., & Wilford L . D . R. (1998). Revision for chemistry GCSE with answers. John murray publishers.

Styl cytowania Chicago

Earl , B., i Wilford L . D . R. Revision for Chemistry GCSE with Answers. London: John murray publishers, 1998.

Styl cytowania MLA

Earl , B., i Wilford L . D . R. Revision for Chemistry GCSE with Answers. John murray publishers, 1998.