APA
Collis Harry, . (1996). 10n 1 American Eglish Riddles. America: Passport books.
Chicago
Collis Harry, . 1996. 10n 1 American Eglish Riddles. America: Passport books.
Harvard
Collis Harry, . (1996). 10n 1 American Eglish Riddles. America: Passport books.
MLA
Collis Harry, . 10n 1 American Eglish Riddles. America: Passport books. 1996.