Gaya APA
Willis, Alden T., Johnston, Carol L., Steig, Mary Jo. (1987).
Elementary algebra (2nd ed).
Belmont, CA:
Wadsworth.
Gaya Chicago
Willis, Alden T., Johnston, Carol L., Steig, Mary Jo.
Elementary algebra.
2nd ed
Belmont, CA:
Wadsworth,
1987.
Text.
Gaya MLA
Willis, Alden T., Johnston, Carol L., Steig, Mary Jo.
Elementary algebra.
2nd ed
Belmont, CA:
Wadsworth,
1987.
Text.
Gaya Turabian
Willis, Alden T., Johnston, Carol L., Steig, Mary Jo.
Elementary algebra.
2nd ed
Belmont, CA:
Wadsworth,
1987.
Print.