APA (7th ed.) Citation

Ojakangas, R. W. Theory And Problems Of Introductory Geology.

Chicago Style (17th ed.) Citation

Ojakangas, Richard W. Theory And Problems Of Introductory Geology.

MLA (9th ed.) Citation

Ojakangas, Richard W. Theory And Problems Of Introductory Geology.

Warning: These citations may not always be 100% accurate.