Gaya APA
Blyton, E. (2009).
Secret Valley, The: A Secret Series Adventure 6 (Cet. 1).
Nottinghamshire:
Award Publications Limited.
Gaya MLA
Blyton, Enid.
"Secret Valley, The: A Secret Series Adventure 6".
Cet. 1
Nottinghamshire:
Award Publications Limited,
2009.
Text.