APA (7th ed.) Citation

William R. Derrick and Judith L. Derrick: William R. Derrick and Judith L. Derrick (Canada.). 1979.

Chicago Style (17th ed.) Citation

William R. Derrick and Judith L. Derrick: William R. Derrick and Judith L. Derrick. Canada. Addision Wesley Publishing Company: 1979.

MLA (9th ed.) Citation

William R. Derrick and Judith L. Derrick: William R. Derrick and Judith L. Derrick. Canada. 1979.

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