APA Style
Blair, E, H., Robertson, J, A. (1973).
The Philippine Islands 1493-1898 volume XXXIX-XLI .
Mandaluyong:
Cachos Hermanos, Inc.
MLA Style
Blair, Emma, Helen., Robertson, James, Alexander.
"The Philippine Islands 1493-1898 volume XXXIX-XLI".
Mandaluyong:
Cachos Hermanos, Inc,
1973.
Buku.