APA引文

Beikman, H. M. (1961). Coal reserves of Washington. State Print. Plant.

Chicago Style (17th ed.) Citation

Beikman, Helen M. Coal Reserves of Washington. Olympia: State Print. Plant, 1961.

MLA引文

Beikman, Helen M. Coal Reserves of Washington. State Print. Plant, 1961.

警告：這些引文格式不一定是100％准確.