Gaya APA
ROYDS-IRMAK, D.
(1976).
Beginning scientific english book 2/ D.E.Royds-Irmak
.
Aylesbury:
Hazell Watson Viney.
Gaya MLA
ROYDS-IRMAK, D.S..
"Beginning scientific english book 2/ D.E.Royds-Irmak".
Aylesbury:
Hazell Watson Viney,
1976.
Text.