APA

Shepherd R., Shepherd R., . (2002). 1000 symbols. New York: Thames & Hudson.

Chicago

Shepherd Rowena, Shepherd Rupert, . 2002. 1000 symbols. New York: Thames & Hudson.

Harvard

Shepherd R., Shepherd R., . (2002). 1000 symbols. New York: Thames & Hudson.

MLA

Shepherd Rowena, Shepherd Rupert, . 1000 symbols. New York: Thames & Hudson. 2002.