Gaya APA
Burke, R., Burke, S. (2011).
E-book Top 10 Washington DC (Eyewitness Top 10 Travel Guide) .
:
Dorling Kindersley Ltd.
Gaya MLA
Burke, Ron., Burke, Susan.
"E-book Top 10 Washington DC (Eyewitness Top 10 Travel Guide)".
:
Dorling Kindersley Ltd,
2011.
Text.