APA引文

Perrin, R. (1971). Focus the future: An introduction to long range corporate planning. Management.

Chicago Edition Citation

Perrin, Robert. Focus the Future: An Introduction to Long Range Corporate Planning. London: Management, 1971.

MLA引文

Perrin, Robert. Focus the Future: An Introduction to Long Range Corporate Planning. Management, 1971.

警告：這些引文格式不一定是100％准確.