Gaya APA
Read, H, , , , , , , , , H., Watson, J. (1975).
Inroduction to geology vol. 2 Earth History (1975).
:
London : Macmillan,.
Gaya MLA
Read, H, , , , , , , , , H.., Watson, Janet.
"Inroduction to geology vol. 2 Earth History".
1975
:
London : Macmillan,,
1975.
Text.