Παραπομπή APA

Wheeler, E. (1970). Tested sentences that sell. wilco publishing house.

Παραπομπή Chicago Style

Wheeler, Elmer. Tested Sentences That Sell. Bombay: wilco publishing house, 1970.

Παραπομπή MLA

Wheeler, Elmer. Tested Sentences That Sell. wilco publishing house, 1970.