APA (7th ed.) Citation

Whelpton, P. K. (1938). Needed population research. The Science press printing company.

Chicago Style (17th ed.) Citation

Whelpton, Pascal K. Needed Population Research. Lancaster, Pa.: The Science press printing company, 1938.

MLA (9th ed.) Citation

Whelpton, Pascal K. Needed Population Research. The Science press printing company, 1938.

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