Gaya APA
Lankevich, G, J. (1981).
Ethnic America 1978 -1980: updating the ethnic chronology series (Pertama).
London:
Oceana Publications.
Gaya MLA
Lankevich, George, J..
"Ethnic America 1978 -1980: updating the ethnic chronology series".
Pertama
London:
Oceana Publications,
1981.
Text.