APA

suen a., eitzen a., . (2002). willie's birthday. new york: puffin books.

Chicago

suen anastasia, eitzen allan, . 2002. willie's birthday. new york: puffin books.

Harvard

suen a., eitzen a., . (2002). willie's birthday. new york: puffin books.

MLA

suen anastasia, eitzen allan, . willie's birthday. new york: puffin books. 2002.