APA Style
BUSKIRK, R, H. et al
(1924).
Textbook of Salesmanship, Volume 9
(
1)
.
Philadelphia:
Grolier Incoporated.
MLA Style
BUSKIRK, RICHARD, H.. et al.
"Textbook of Salesmanship, Volume 9".
1
Philadelphia:
Grolier Incoporated,
1924.
Text.