Gaya APA
Spiegel, M., R. (1961).
Theory and Problems of Statistics In Si Units (1).
New York:
Mc-Graw Hill Book Company.
Gaya MLA
Spiegel, Murray, R..
"Theory and Problems of Statistics In Si Units".
1
New York:
Mc-Graw Hill Book Company,
1961.
Buku Inti.