APA

French،Vivian, robins،arthur, . (1988). The three billy goats gruff. london: walker books.

Chicago

French،Vivian, robins،arthur, . 1988. The three billy goats gruff. london: walker books.

Harvard

French،Vivian, robins،arthur, . (1988). The three billy goats gruff. london: walker books.

MLA

French،Vivian, robins،arthur, . The three billy goats gruff. london: walker books. 1988.