Multiple works by same author in same year

In-text citations

Paraphrasing

Matthews (2010a; 2010b) writes for both teenagers and very young children. AUTHOR PROMINENT

A crime committed in Australia is the basis for her first fictional account (Matthews 2010a); while in the second the narrative inches slothfully into adventure (Matthews 2010b). INFORMATION PROMINENT

Direct quote

Mathews' use of dialogue shifts from the idiomatic, 'she jumps a mile and screams' (2010a, p. 47).

Reference list

Matthews, P 2010a, A girl like me, Penguin Books, Camberwell.

Matthews, P 2010b, Zizzy, Omnibus Books, Malvern.

Order alphabetically by the next element (title)
Add 'a', 'b', 'c', etc. after the year of publication (e.g. 2010a, 2010b, 2010c).