APA引文

SPENCER, E. H. basic concepts of physical geology#Elizabeth humpris Spencer. Thomas Y Growel.

Chicago Style (17th ed.) Citation

SPENCER, Elizabeth Humphris. Basic Concepts of Physical Geology#Elizabeth Humpris Spencer. Thomas Y Growel.

MLA引文

SPENCER, Elizabeth Humphris. Basic Concepts of Physical Geology#Elizabeth Humpris Spencer. Thomas Y Growel.

警告：这些引文格式不一定是100％准确.