APA

Skurzynski G., Heller J., . (2004). The minstrel in the tower. New York: Random House.

Chicago

Skurzynski Gloria, Heller Julek, . 2004. The minstrel in the tower. New York: Random House.

Harvard

Skurzynski G., Heller J., . (2004). The minstrel in the tower. New York: Random House.

MLA

Skurzynski Gloria, Heller Julek, . The minstrel in the tower. New York: Random House. 2004.